Most powershell core about_* help files are not formatted to support the built in extraction of a synopsis.

Given that the synopsis is the ONLY metadata that can be extracted from the about_ format (which sucks - see #8230 ), these files should be correctly formatted to maximize helpfulness of help using built in features.

Steps to reproduce

Expected behavior

about_Scheduled_Jobs_Advanced     HelpFile                            Explains advanced scheduled job topics, including the file structure
about_Scheduled_Jobs_Basics       HelpFile                            Explains how to create and manage scheduled jobs.

Actual behavior

about_Types.ps1xml                HelpFile
about_Type_Operators              HelpFile
about_Updatable_Help              HelpFile
About_Using                       HelpFile

Get-Help parses only the first line of the SHORT DESCRIPTION into a synopsis.

Most of the about_* files in powershell core are formatted as (notice blank line after heading):

SHORT DESCRIPTION

    This is the short description

for the file synopsis to show up, they should be

SHORT DESCRIPTION
    This is the short description