Add anchor (#566)

Co-authored-by: Lina Wolf <[email protected]>

Author: github-actions[bot]

Documentation/Concepts/TypoScript/Index.rst

@@ -78,6 +78,8 @@ around the single line of content:
 ..  literalinclude:: _minimal-output.html
     :caption: Example frontend output
 
+..  _typoscript-active-debug:
+
 Debug the TypoScript in the backend module "Active TypoScript"
 ==============================================================