[BUGFIX] Add missing whitespace in deprecation log entry

Resolves: #91224
Releases: master
Change-Id: I47d30a21965c3d2246a53c51a68856642cca647a
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/64339
Tested-by: TYPO3com <noreply@typo3.com>
Tested-by: Benni Mack <benni@typo3.org>
Tested-by: Daniel Goerz <daniel.goerz@posteo.de>
Reviewed-by: Benni Mack <benni@typo3.org>
Reviewed-by: Daniel Goerz <daniel.goerz@posteo.de>

typo3/sysext/extbase/Classes/Utility/ExtensionUtility.php

@@ -213,7 +213,7 @@ public static function registerModule($extensionName, $mainModuleName = '', $sub
         $vendorName = null;
         if (false !== $delimiterPosition = strrpos($extensionName, '.')) {
             trigger_error(
-                'Calling method ' . __METHOD__ . 'with argument $extensionName containing the vendor name is deprecated and will stop working in TYPO3 11.0.',
+                'Calling method ' . __METHOD__ . ' with argument $extensionName containing the vendor name is deprecated and will stop working in TYPO3 11.0.',
                 E_USER_DEPRECATED
             );
             $vendorName = str_replace('.', '\\', substr($extensionName, 0, $delimiterPosition));