[BUGFIX] Fix links to former TypoScript in 45 min (#552)

Releases: main, 13.4, 12.4

Documentation/Index.rst

@@ -27,9 +27,10 @@ TSconfig Reference
 This document describes TSconfig: A TypoScript-like syntax for configuring
 details of the TYPO3 backend.
 
-In addition, you can find a quick reference guide to TypoScript templates in
-:ref:`t3ts45:start`, a complete reference of all object types and properties of
-TypoScript in :ref:`TypoScript Reference <t3tsref:start>` and explanations of
+In addition, you can find
+:ref:`a quick introduction into TypoScript <t3tsref:guide>`,
+and a complete reference of all object types and properties of
+TypoScript in the :ref:`TypoScript Reference <t3tsref:start>` and explanations of
 TypoScript syntax in the chapter
 ":ref:`TypoScript Syntax <t3coreapi:typoscript-syntax-start>`" of TYPO3
 Explained.