[BUGFIX] Resolve typo in ClassNamingUtility description

Changes 'convertions' to 'conversions'

Resolves: #47393
Releases: 6.1
Change-Id: I98e4826527e25fdbf9da0855c05fcaa7d67698c2
Reviewed-on: https://review.typo3.org/20054
Reviewed-by: Oliver Klee
Reviewed-by: Alexander Opitz
Tested-by: Alexander Opitz
Reviewed-by: Christian Kuhn
Tested-by: Christian Kuhn

typo3/sysext/core/Classes/Utility/ClassNamingUtility.php

@@ -27,7 +27,7 @@ namespace TYPO3\CMS\Core\Utility;
  *  This copyright notice MUST APPEAR in all copies of the script!
  ***************************************************************/
 /**
- * Several functions related to naming and convertions of names
+ * Several functions related to naming and conversions of names
  * such as translation between Repository and Model names or
  * exploding an objectControllerName into pieces
  *