[Backport 13.4] update button text (#744)

* update button text

This change removes a duplicate word and alters the appearance of the button—it no longer wraps and fits better with the headline of the linked page.

* Apply suggestions from code review

Co-authored-by: Sarah McCarthy <sarahmccarthy123@yahoo.com>

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Co-authored-by: bitbruder <15855432+bitbruder@users.noreply.github.com>
Co-authored-by: Sarah McCarthy <sarahmccarthy123@yahoo.com>

Author: 3 people

Documentation/Concepts/Index.rst

@@ -63,7 +63,7 @@ TYPO3 Concepts
         TypoScript is the basic configuration language used to configure the
         frontend output of a page in TYPO3.
 
-        ..  card-footer:: :ref:`Create a minimal page created by pure TypoScript <typoscript>`
+        ..  card-footer:: :ref:`Create a minimal page using just TypoScript <typoscript>`
             :button-style: btn btn-secondary stretched-link
 
     ..  card:: TSconfig