Use sphinx-prompt extension (#4908)

* Use sphinx-prompt extension

* Update PM2 guide

* Use an actual proper way to run Red with PM2

* Fix pm2 docs

Co-authored-by: Kowlin <Kowlin@users.noreply.github.com>

docs/install_windows.rst

@@ -33,7 +33,7 @@ right-click on it and then click "Run as administrator".
 
 Then run each of the following commands:
 
-.. code-block:: none
+.. prompt:: powershell
 
     Set-ExecutionPolicy Bypass -Scope Process -Force
     [System.Net.ServicePointManager]::SecurityProtocol = [System.Net.ServicePointManager]::SecurityProtocol -bor 3072
@@ -44,7 +44,7 @@ Then run each of the following commands:
 
 For Audio support, you should also run the following command before exiting:
 
-.. code-block:: none
+.. prompt:: powershell
 
     choco upgrade adoptopenjdk11jre -y
 
@@ -109,13 +109,13 @@ Start with opening a command prompt (open Start, search for "command prompt", th
 
 Then create your virtual environment with the following command
 
-.. code-block:: none
+.. prompt:: batch
 
     py -3.8 -m venv "%userprofile%\redenv"
 
 And activate it with the following command
 
-.. code-block:: none
+.. prompt:: batch
 
     "%userprofile%\redenv\Scripts\activate.bat"
 
@@ -138,14 +138,16 @@ Run **one** of the following set of commands, depending on what extras you want
 
   * Normal installation:
 
-    .. code-block:: none
+    .. prompt:: batch
+        :prompts: (redenv) C:\\>
 
         python -m pip install -U pip setuptools wheel
         python -m pip install -U Red-DiscordBot
 
   * With PostgreSQL support:
 
-    .. code-block:: none
+    .. prompt:: batch
+        :prompts: (redenv) C:\\>
 
         python -m pip install -U pip setuptools wheel
         python -m pip install -U Red-DiscordBot[postgres]
@@ -156,7 +158,8 @@ Setting Up and Running Red
 
 After installation, set up your instance with the following command:
 
-.. code-block:: none
+.. prompt:: batch
+    :prompts: (redenv) C:\\>
 
     redbot-setup
 
@@ -166,7 +169,8 @@ running the bot).
 
 Once done setting up the instance, run the following command to run Red:
 
-.. code-block:: none
+.. prompt:: batch
+    :prompts: (redenv) C:\\>
 
     redbot <your instance name>