Fix structure of About files

Author: sdwheeler

reference/5.1/Microsoft.PowerShell.Core/About/about_Automatic_Variables.md

@@ -15,6 +15,8 @@ title: about_Automatic_Variables
 Describes variables that store state information for and are created and
 maintained by PowerShell.
 
+## LONG DESCRIPTION
+
 Conceptually, most of these variables are considered to be read-only. Even
 though they _can_ be written to, for backward compatibility they _should not_
 be written to.

reference/5.1/Microsoft.PowerShell.Core/About/about_Comment_Based_Help.md

@@ -10,6 +10,7 @@ title: about_Comment_Based_Help
 # about_Comment_Based_Help
 
 ## SHORT DESCRIPTION
+
 Describes how to write comment-based help content for functions and scripts.
 
 ## LONG DESCRIPTION

reference/5.1/Microsoft.PowerShell.Core/About/about_Environment_Variables.md

@@ -9,8 +9,11 @@ title: about_Environment_Variables
 # about_Environment_Variables
 
 ## SHORT DESCRIPTION
+
 Describes how to access and manage environment variables in PowerShell.
 
+## LONG DESCRIPTION
+
 Environment variables store data that's used by the operating system and other
 programs. PowerShell creates the following environment variables:
 
@@ -22,8 +25,6 @@ programs. PowerShell creates the following environment variables:
 For full descriptions of these variables, see the
 [PowerShell environment variables][03] of this article.
 
-## LONG DESCRIPTION
-
 PowerShell can access and manage environment variables in any of the supported
 operating system platforms. The PowerShell Environment provider lets you get,
 add, change, clear, and delete environment variables in the current console.

reference/5.1/Microsoft.PowerShell.Core/About/about_Intrinsic_Members.md

@@ -14,7 +14,7 @@ title: about_Intrinsic_Members
 Provides information about PowerShell's intrinsic members that are available to
 all PowerShell objects.
 
-## DETAILED DESCRIPTION
+## LONG DESCRIPTION
 
 When objects are created, PowerShell adds some "hidden" properties and methods
 to each object. These properties and methods are known as _intrinsic members_.

reference/5.1/Microsoft.PowerShell.Core/About/about_Job_Details.md

@@ -12,7 +12,7 @@ title: about_Job_Details
 
 Provides details about background jobs on local and remote computers.
 
-## DETAILED DESCRIPTION
+## LONG DESCRIPTION
 
 This topic explains the concept of a background job and provides technical
 information about how background jobs work in PowerShell.

reference/5.1/Microsoft.PowerShell.Core/About/about_Remote_Jobs.md

@@ -12,7 +12,7 @@ title: about_Remote_Jobs
 
 Describes how to run background jobs on remote computers.
 
-## DETAILED DESCRIPTION
+## LONG DESCRIPTION
 
 PowerShell concurrently runs commands and scripts through jobs. There are three
 jobs types provided by PowerShell to support concurrency.

reference/5.1/PSReadLine/About/about_PSReadLine.md

@@ -13,6 +13,8 @@ title: about_PSReadLine
 PSReadLine provides an improved command-line editing experience in the
 PowerShell console.
 
+## LONG DESCRIPTION
+
 There have been many updates to PSReadLine since the version that ships in
 Windows PowerShell 5.1.
 
@@ -27,8 +29,6 @@ Windows PowerShell 5.1.
 For more information about version differences, see
 [about_PSReadLine_Release_Notes](about_PSReadLine_Release_Notes.md).
 
-## LONG DESCRIPTION
-
 The current version of PSReadLine can be installed and used on Windows
 PowerShell 5.1 and newer. For some features, you need to be running PowerShell
 7.2 or higher.

reference/5.1/PSReadLine/About/about_PSReadLine_Release_Notes.md

@@ -8,12 +8,16 @@ title: about_PSReadLine_Release_Notes
 ---
 # about_PSReadLine_Release_Notes
 
+## SHORT DESCRIPTION
+
 This is a summary of changes to the **PSReadLine** module. For a full list of
 changes, see the **PSReadLine** [ChangeLog][01].
 
 - Current preview: v2.4.4-beta4
 - Current stable release: v2.3.6
 
+## LONG DESCRIPTION
+
 ## PSREADLINE RELEASE HISTORY
 
 There have been many updates to PSReadLine since the version that ships in
@@ -27,8 +31,6 @@ Windows PowerShell 5.1.
 - v2.0.4 shipped in PowerShell 7.0.11
 - v2.0.0 ships in Windows PowerShell 5.1
 
-## RELEASE NOTES
-
 ### 2.4.4-beta4 - 2025-08-28
 
 - Added screen reader support to PSReadLine - The new render implementation

reference/7.4/Microsoft.PowerShell.Core/About/about_Automatic_Variables.md

@@ -15,6 +15,8 @@ title: about_Automatic_Variables
 Describes variables that store state information for and are created and
 maintained by PowerShell.
 
+## LONG DESCRIPTION
+
 Conceptually, most of these variables are considered to be read-only. Even
 though they _can_ be written to, for backward compatibility they _should not_
 be written to.
@@ -69,8 +71,6 @@ Here is a list of the automatic variables in PowerShell:
 - [`$this`][47]
 - [`$true`][48]
 
-## LONG DESCRIPTION
-
 ### `$$`
 
 Contains the last token in the last line received by the session.

reference/7.4/Microsoft.PowerShell.Core/About/about_Calling_Generic_Methods.md

@@ -8,6 +8,14 @@ title: about_Calling_Generic_Methods
 ---
 # about_Calling_Generic_Methods
 
+## SHORT DESCRIPTION
+
+A generic type is a parameterized type definition that you instantiate with
+concrete type arguments (like `List<T>`), giving reusable, type-safe code that
+the compiler and CLR handle efficiently.
+
+## LONG DESCRIPTION
+
 Generics let you tailor a method, class, structure, or interface to the precise
 data type it acts upon. For example, instead of using the
 [System.Collections.Hashtable][01] class, which allows keys and values to be