[PREPORT] Update AddingYourOwnContentElements.rst (#4839)

Preport of #4839

Already merged into 12.4 and 13.4

Documentation/ApiOverview/ContentElements/AddingYourOwnContentElements.rst

@@ -189,7 +189,7 @@ The :typoscript:`lib.contentElement` path is defined in file
 :t3src:`typo3/sysext/fluid_styled_content/Configuration/TypoScript/Helper/ContentElement.typoscript`.
 and uses a :ref:`t3tsref:cobj-fluidtemplate`.
 
-We reference :doc:`fluid_styled_contents <typo3/cms-fluid-styled-content:Index>`
+We reference :doc:`fluid_styled_content <typo3/cms-fluid-styled-content:Index>`
 :typoscript:`lib.contentElement` from our new content element and only change
 the Fluid template to be used.