remove doubled H2s

Author: sdwheeler

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

@@ -36,7 +36,6 @@ information about how to display help content for functions and scripts, see
 The [Update-Help][08] and [Save-Help][07] cmdlets work only on XML files.
 Updatable Help doesn't support comment-based help content.
 
-## SYNTAX FOR COMMENT-BASED HELP
 ## SYNTAX FOR COMMENT-BASED HELP
 
 To create Comment-based help content, you can use either style of comments:
@@ -87,7 +86,6 @@ as `.EXAMPLE`, can appear many times in the same comment block. The help
 content for each keyword begins on the line after the keyword and can span
 multiple lines.
 
-## SYNTAX FOR COMMENT-BASED HELP IN FUNCTIONS
 ## SYNTAX FOR COMMENT-BASED HELP IN FUNCTIONS
 
 Comment-based help for a function can appear in one of three locations:
@@ -133,7 +131,6 @@ or
 function Get-Function { }
 ```
 
-## SYNTAX FOR COMMENT-BASED HELP IN SCRIPTS
 ## SYNTAX FOR COMMENT-BASED HELP IN SCRIPTS
 
 Comment-based help for a script can appear in one of the following two
@@ -171,7 +168,6 @@ function Get-Function { }
 #>
 ```
 
-## COMMENT-BASED HELP KEYWORDS
 ## COMMENT-BASED HELP KEYWORDS
 
 The following are valid comment-based help keywords. These keywords can appear
@@ -350,7 +346,6 @@ as it does in a module directory.
 For more information about the cmdlet help XML-based help file format, see
 [How to Write Cmdlet Help][01].
 
-## AUTOGENERATED CONTENT
 ## AUTOGENERATED CONTENT
 
 The name, syntax, parameter list, parameter attribute table, common parameters,