Update update_index.yaml

.github/workflows/update_index.yaml

@@ -29,7 +29,7 @@ jobs:
         $diff = git diff --name-only HEAD^ HEAD
 
         # Check if a markdown file and only a markdown file in the docs/ directory has been added or deleted
-        $SourceDiff = $diff | Where-Object { $_ -match '^docs/' -and $_ -like '*.md' }
+        $SourceDiff = $diff | Where-Object { $_ -match '^A' -or $_ -match '^D' and $_ -match '^docs/' -and $_ -match '*.md' }
         $HasDiff = $SourceDiff.Length -gt 0
 
         # Set the output named "docs_changed"