Sync eng/common directory with azure-sdk-tools for PR 3221 (Azure#17757)

* Make docs.ms link relative link

* Update Update-DocsMsMetadata.ps1

* Update eng/common/scripts/Update-DocsMsMetadata.ps1

Co-authored-by: Daniel Jurek <djurek@microsoft.com>

Co-authored-by: sima-zhu <sizhu@microsoft.com>
Co-authored-by: Sima Zhu <48036328+sima-zhu@users.noreply.github.com>
Co-authored-by: Daniel Jurek <djurek@microsoft.com>

Author: 3 people

eng/common/scripts/Update-DocsMsMetadata.ps1

@@ -129,13 +129,12 @@ author: $author
 ms.author: $msauthor
 ms.date: $date
 ms.topic: reference
-ms.prod: azure
-ms.technology: azure
 ms.devlang: $Language
 ms.service: $service
 ---
 "@
 
+  $ReadmeContent = $ReadmeContent -replace "https://docs.microsoft.com(/en-us)?/?", "/"
   return "$header`n$ReadmeContent"
 }