Use humanized names for command palette-related instructions

Motivation: copy-pasting a command which is not humanized into the
command palette will result in an empty list of matches. So lets tell
users what they should type.

Author: izuzak

book/03-hacking-atom/sections/03-modify-buffer.asc

@@ -61,19 +61,19 @@ Next we insert a string into the current text editor with the https://atom.io/do
 
 ===== Reload the Package
 
-Before we can trigger `ascii-art:convert`, we need to load the latest code for our package by reloading the window. Run the command `window:reload` from the command palette or by pressing `ctrl-alt-cmd-l`.
+Before we can trigger `ascii-art:convert`, we need to load the latest code for our package by reloading the window. Run the command "Window: Reload" from the command palette or by pressing `ctrl-alt-cmd-l`.
 
 ===== Trigger the Command
 
-Now open the command panel and search for the `ascii-art:convert` command. But it's not there! To fix this, open _package.json_ and find the property called `activationCommands`. Activation Events speed up load time by allowing Atom to delay a package's activation until it's needed. So remove the existing command and add `ascii-art:convert` to the `activationCommands` array:
+Now open the command panel and search for the "Ascii Art: Convert" command. But it's not there! To fix this, open _package.json_ and find the property called `activationCommands`. Activation commands speed up load time by allowing Atom to delay a package's activation until it's needed. So remove the existing command and use `ascii-art:convert` in `activationCommands`:
 
 ```json
 "activationCommands": {
   "atom-workspace": "ascii-art:convert"
 }
 ```
 
-First, reload the window by running the command `window:reload`. Now when you run the `ascii-art:convert` command it will output 'Hello, World!'
+First, reload the window by running the command "Window: Reload" from the command palette. Now when you run the "Ascii Art: Convert" command it will output 'Hello, World!'
 
 ===== Add a Key Binding
 
@@ -98,8 +98,7 @@ Now we need to convert the selected text to ASCII art. To do this we will use th
 }
 ```
 
-After saving the file, run the command 'update-package-dependencies:update' from
-the Command Palette. This will install the package's node module dependencies, only figlet in this case. You will need to run 'update-package-dependencies:update' whenever you update the dependencies field in your _package.json_ file.
+After saving the file, run the command "Update Package Dependencies: Update" from the Command Palette. This will install the package's node module dependencies, only figlet in this case. You will need to run "Update Package Dependencies: Update" whenever you update the dependencies field in your _package.json_ file.
 
 If for some reason this doesn't work, you'll see a message saying ``Failed to update package dependencies'' and you will find a new `npm-debug.log` file in your directory. That file should give you some idea as to what went wrong.