Add Get-ClassTypeNameFromDataFile function and update documentation links

[MrHinsh]

This pull request primarily enhances how documentation URLs are generated in the Get-DiscussionId.ps1 script by including the class type name in the URL path. It introduces a new function to extract the class type name from data files and updates all relevant code paths to use this value. Additionally, a minor metadata update is made to a documentation markdown file.

Improvements to documentation URL generation:

• Added a new function Get-ClassTypeNameFromDataFile to extract the typeName property from YAML data files, with error handling for missing or invalid files. (.powershell/docs/Get-DiscussionId.ps1)
• Updated all references to data file paths to use the correct directory: .\docs\data\classesThis pull request primarily enhances how documentation URLs are generated in the Get-DiscussionId.ps1` script by including the class type name in the URL path. It introduces a new function to extract the class type name from data files and updates all relevant code paths to use this value. Additionally, a minor metadata update is made to a documentation markdown file.

Improvements to documentation URL generation:

• Added a new function Get-ClassTypeNameFromDataFile to extract the typeName property from YAML data files, with error handling for missing or invalid files. (.powershell/docs/Get-DiscussionId.ps1)
  instead of .\docsThis pull request primarily enhances how documentation URLs are generated in the Get-DiscussionId.ps1` script by including the class type name in the URL path. It introduces a new function to extract the class type name from data files and updates all relevant code paths to use this value. Additionally, a minor metadata update is made to a documentation markdown file.

Improvements to documentation URL generation:

• Added a new function Get-ClassTypeNameFromDataFile to extract the typeName property from YAML data files, with error handling for missing or invalid files. (.powershell/docs/Get-DiscussionId.ps1)
  . (.powershell/docs/Get-DiscussionId.ps1) [1] [2]
• Modified the construction of documentation URLs to include the class type name as a path segment, ensuring URLs are more specific and organized. (.powershell/docs/Get-DiscussionId.ps1) [1] [2] [3]
• Ensured that the class type name is consistently extracted and used in both the main discussion creation logic and in the loop over markdown objects, including normalization to lowercase where appropriate. (.powershell/docs/Get-DiscussionId.ps1)

Documentation metadata update:

• Added a discussionId field to the front matter of docs/content/docs/get-started/validation/index.md.

[nkdagility-actions-bot]

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