Docs: Few small tweaks

Author: sapegin

docs/Configuration.md

@@ -377,10 +377,8 @@ module.exports = {
 
 Use it like this in you Markdown files:
 
-```md
-\`\`\`js { "file": "./some/file.js" }
-\`\`\`
-```
+    ```js { "file": "./some/file.js" }
+    ```
 
 #### `verbose`
 

docs/Documenting.md

@@ -43,8 +43,7 @@ export default class Button extends React.Component {
 
 ## Usage examples and Readme files
 
-Styleguidist will look for any `Readme.md` or `ComponentName.md` files in the component’s folder and display them. Any code block with a language tag of 'js', 'jsx'
- or 'javascript' will be rendered as a React component with live editable preview.
+Styleguidist will look for any `Readme.md` or `ComponentName.md` files in the component’s folder and display them. Any code block with a language tag of `js`, `jsx` or `javascript` will be rendered as a React component with a live editable preview.
 
     React component example:
 

docs/Thirdparties.md

@@ -138,7 +138,7 @@ module.exports = {
 ```
 
 ```jsx
-// src/MyComponent/index.md
+// src/MyComponent/Readme.md
 <MyComponent object={sample.object} />
 ```