Fixes #8817 - Add info about end-of-parameters token

[sdwheeler]

PR Summary

Fixes AB#1949656 - Fixes #8817 - Add info about end-of-parameters token

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[opbld31]

Docs Build status updates of commit 4cf019d:

⚠️ Validation status: warnings

File	Status	Preview URL	Details
reference/5.1/Microsoft.PowerShell.Core/About/about_Parsing.md	⚠️Warning	View (powershell-5.1)	Details
reference/7.0/Microsoft.PowerShell.Core/About/about_Parsing.md	⚠️Warning	View (powershell-7)	Details
reference/7.1/Microsoft.PowerShell.Core/About/about_Parsing.md	⚠️Warning	View (powershell-7.1)	Details
reference/7.2/Microsoft.PowerShell.Core/About/about_Parsing.md	⚠️Warning	View (powershell-7.2)	Details
reference/7.3/Microsoft.PowerShell.Core/About/about_Parsing.md	⚠️Warning	View (powershell-7.3)	Details
reference/5.1/Microsoft.PowerShell.Core/About/about_Special_Characters.md	✅Succeeded	View (powershell-5.1)
reference/7.0/Microsoft.PowerShell.Core/About/about_Special_Characters.md	✅Succeeded	View (powershell-7)
reference/7.1/Microsoft.PowerShell.Core/About/about_Special_Characters.md	✅Succeeded	View (powershell-7.1)
reference/7.2/Microsoft.PowerShell.Core/About/about_Special_Characters.md	✅Succeeded	View (powershell-7.2)
reference/7.3/Microsoft.PowerShell.Core/About/about_Special_Characters.md	✅Succeeded	View (powershell-7.3)
reference/docs-conceptual/lang-spec/chapter-08.md	✅Succeeded	View (>=powershell-5.1)

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

• Line 136, Column 3: [Warning: bookmark-not-found] Cannot find bookmark '#the-stop-parsing-token' in '5.1/Microsoft.PowerShell.Core/About/about_Parsing.md'.

reference/7.0/Microsoft.PowerShell.Core/About/about_Parsing.md

• Line 136, Column 3: [Warning: bookmark-not-found] Cannot find bookmark '#the-stop-parsing-token' in '7.0/Microsoft.PowerShell.Core/About/about_Parsing.md'.

reference/7.1/Microsoft.PowerShell.Core/About/about_Parsing.md

• Line 136, Column 3: [Warning: bookmark-not-found] Cannot find bookmark '#the-stop-parsing-token' in '7.1/Microsoft.PowerShell.Core/About/about_Parsing.md'.

reference/7.2/Microsoft.PowerShell.Core/About/about_Parsing.md

• Line 136, Column 3: [Warning: bookmark-not-found] Cannot find bookmark '#the-stop-parsing-token' in '7.2/Microsoft.PowerShell.Core/About/about_Parsing.md'.

reference/7.3/Microsoft.PowerShell.Core/About/about_Parsing.md

• Line 136, Column 3: [Warning: bookmark-not-found] Cannot find bookmark '#the-stop-parsing-token' in '7.3/Microsoft.PowerShell.Core/About/about_Parsing.md'.

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[CherryDT]

Hm, my testing showed that -- is ignored when invoking an Application (and passed on without being swallowed), but with an ExternalScript it is interpreted. The new docs don't seem to clarify that point.