Fix hard-coded master (Azure#19333)

Co-authored-by: Chidozie Ononiwu <chononiw@microsoft.com>

Author: azure-sdk

eng/common/pipelines/templates/steps/set-default-branch.yml

@@ -5,8 +5,8 @@ steps:
 - pwsh: |
     $setDefaultBranch = (git remote show ${{ parameters.RemoteRepo }} | Out-String) -replace "(?ms).*HEAD branch: (\w+).*", '$1'
     if ($LASTEXITCODE -ne 0) {
-      Write-Host "Not able to fetch the default branch from git command. Set to master."
-      $setDefaultBranch = 'master'
+      Write-Host "Not able to fetch the default branch from git command. Set to main."
+      $setDefaultBranch = 'main'
     }
     Write-Host "Setting DefaultBranch=$setDefaultBranch"
     Write-Host "##vso[task.setvariable variable=DefaultBranch]$setDefaultBranch"

eng/common/scripts/update-docs-metadata.ps1

@@ -24,7 +24,7 @@ param (
 
 . (Join-Path $PSScriptRoot common.ps1)
 
-$releaseReplaceRegex = "(https://github.com/$RepoId/(?:blob|tree)/)master"
+$releaseReplaceRegex = "(https://github.com/$RepoId/(?:blob|tree)/)main"
 
 function GetMetaData {
   if (Test-Path Variable:MetadataUri) {