[Preport] Fix non blocking locking example (TYPO3-Documentation#4814) (…

…TYPO3-Documentation#4815)

Co-authored-by: Thomas Heilmann <1016315+theilm@users.noreply.github.com>
Co-authored-by: Chris Müller <2566282+brotkrueml@users.noreply.github.com>

Documentation/ApiOverview/LockingApi/Index.rst

@@ -191,7 +191,7 @@ Acquire and use an exclusive, non-blocking lock:
 
    // now use the locker to lock something exclusively, this will not block, so handle retry / abort yourself,
    // e.g. by using a loop
-   if ($locker->acquire(LockingStrategyInterface::LOCK_CAPABILITY_EXCLUSIVE)) {
+   if ($locker->acquire(LockingStrategyInterface::LOCK_CAPABILITY_EXCLUSIVE | LockingStrategyInterface::LOCK_CAPABILITY_NOBLOCK)) {
        // ... some work to be done that requires locking
 
        // after you did your stuff, you must release