Update README.md

- minor style and grammar adjustments

Author: VasileDurlesteanu

README.md

@@ -914,19 +914,19 @@ You can download the PDF and Epub version of this repository from the latest run
 
 31. ### What is a custom pipe?
     Apart from built-in pipes, you can write your own custom pipe with the below key characteristics:
-    1. A pipe is a class decorated with pipe metadata **@Pipe** decorator, which you import from the core Angular library
+    1. A pipe is a class decorated with pipe metadata `@Pipe` decorator, which you import from the core Angular library
        For example,
         ```javascript
             @Pipe({name: 'myCustomPipe'})
         ```
     2. The pipe class implements the **PipeTransform** interface's transform method that accepts an input value followed by optional parameters and returns the transformed value.
-       The structure of pipeTransform would be as below,
+       The structure of `PipeTransform` would be as below,
         ```javascript
         interface PipeTransform {
           transform(value: any, ...args: any[]): any
         }
         ```
-    3. The @Pipe decorator allows you to define the pipe name that you'll use within template expressions. It must be a valid JavaScript identifier.
+    3. The `@Pipe` decorator allows you to define the pipe name that you'll use within template expressions. It must be a valid JavaScript identifier.
         ```javascript
         template: `{{someInputValue | myCustomPipe: someOtherValue}}`
         ```
@@ -961,10 +961,9 @@ You can download the PDF and Epub version of this repository from the latest run
   **[⬆ Back to Top](#table-of-contents)**
 
 34. ### What is a bootstrapping module?
-    Every application has at least one Angular module, the root module that you bootstrap to launch the application is called as bootstrapping module. It is commonly known as AppModule. The default structure of AppModule generated by AngularCLI would be as follows,
-
-        ```javascript
-        /* JavaScript imports */
+    Every application has at least one Angular module, the root module that you bootstrap to launch the application is called as bootstrapping module. It is commonly known as `AppModule`. The default structure of `AppModule` generated by AngularCLI would be as follows:
+	
+	```javascript
         import { BrowserModule } from '@angular/platform-browser';
         import { NgModule } from '@angular/core';
         import { FormsModule } from '@angular/forms';
@@ -986,7 +985,7 @@ You can download the PDF and Epub version of this repository from the latest run
           bootstrap: [AppComponent]
         })
         export class AppModule { }
-        ```
+	```
 
   **[⬆ Back to Top](#table-of-contents)**
 
@@ -996,7 +995,7 @@ You can download the PDF and Epub version of this repository from the latest run
   **[⬆ Back to Top](#table-of-contents)**
 
 36. ### What is HttpClient and its benefits?
-    Most of the Front-end applications communicate with backend services over HTTP protocol using either XMLHttpRequest interface or the fetch() API. Angular provides a simplified client HTTP API known as **HttpClient** which is based on top of XMLHttpRequest interface. This client is avaialble from `@angular/common/http` package.
+    Most of the Front-end applications communicate with backend services over `HTTP` protocol using either `XMLHttpRequest` interface or the `fetch()` API. Angular provides a simplified client HTTP API known as `HttpClient` which is based on top of XMLHttpRequest interface. This client is avaialble from `@angular/common/http` package.
     You can import in your root module as below,
 
     ```javascript
@@ -1012,9 +1011,9 @@ You can download the PDF and Epub version of this repository from the latest run
 
   **[⬆ Back to Top](#table-of-contents)**
 
-37. ### Explain on how to use HttpClient with an example?
-    Below are the steps need to be followed for the usage of HttpClient.
-    1. Import HttpClient into root module:
+37. ### Explain on how to use `HttpClient` with an example?
+    Below are the steps need to be followed for the usage of `HttpClient`.
+    1. Import `HttpClient` into root module:
         ```javascript
         import { HttpClientModule } from '@angular/common/http';
         @NgModule({
@@ -1027,8 +1026,8 @@ You can download the PDF and Epub version of this repository from the latest run
           })
          export class AppModule {}
         ```
-    2. Inject the HttpClient into the application:
-        Let's create a userProfileService(userprofile.service.ts) as an example. It also defines get method of HttpClient
+    2. Inject the `HttpClient` into the application:
+        Let's create a userProfileService(`userprofile.service.ts`) as an example. It also defines get method of `HttpClient`:
         ```javascript
         import { Injectable } from '@angular/core';
         import { HttpClient } from '@angular/common/http';
@@ -1045,7 +1044,7 @@ You can download the PDF and Epub version of this repository from the latest run
         }
         ```
     3. Create a component for subscribing service:
-        Let's create a component called UserProfileComponent(userprofile.component.ts) which inject UserProfileService and invokes the service method,
+        Let's create a component called UserProfileComponent(`userprofile.component.ts`), which injects `UserProfileService` and invokes the service method:
         ```javascript
         fetchUserProfile() {
           this.userProfileService.getUserProfile()
@@ -1061,20 +1060,20 @@ You can download the PDF and Epub version of this repository from the latest run
   **[⬆ Back to Top](#table-of-contents)**
 
 38. ### How can you read full response?
-    The response body doesn't may not return full response data because sometimes servers also return special headers or status code which are important for the application workflow. Inorder to get full response, you should use observe option from HttpClient,
+    The response body doesn't or may not return full response data because sometimes servers also return special headers or status code, which are important for the application workflow. In order to get the full response, you should use `observe` option from `HttpClient`:
 
     ```javascript
     getUserResponse(): Observable<HttpResponse<User>> {
       return this.http.get<User>(
         this.userUrl, { observe: 'response' });
     }
     ```
-    Now HttpClient.get() method returns an Observable of typed HttpResponse rather than just the JSON data.
+    Now `HttpClient.get()` method returns an Observable of typed `HttpResponse` rather than just the `JSON` data.
 
   **[⬆ Back to Top](#table-of-contents)**
 
 39. ### How do you perform Error handling?
-    If the request fails on the server or failed to reach the server due to network issues then HttpClient will return an error object instead of a successful reponse. In this case, you need to handle in the component by passing error object as a second callback to subscribe() method.
+    If the request fails on the server or fails to reach the server due to network issues, then `HttpClient` will return an error object instead of a successful reponse. In this case, you need to handle in the component by passing `error` object as a second callback to `subscribe()` method.
 
     Let's see how it can be handled in the component with an example,
     ```javascript
@@ -1086,7 +1085,7 @@ You can download the PDF and Epub version of this repository from the latest run
         );
     }
     ```
-    It is always a good idea to give the user some meaningful feedback instead of displaying the raw error object returned from HttpClient.
+    It is always a good idea to give the user some meaningful feedback instead of displaying the raw error object returned from `HttpClient`.
 
   **[⬆ Back to Top](#table-of-contents)**