Issue #3330481 by spokje, quietone, mstrelan, smustgrave: Fix PHPStan…

… L2 error "PHPDoc tag @foo has invalid value (Bar)"

(cherry picked from commit 5a87e35f8fa50354ed0336e3bb16b4e14c1db531)

Plugin.php

@@ -47,7 +47,7 @@ class Plugin implements PluginInterface, EventSubscriberInterface, Capable {
   /**
    * Record whether the 'require' command was called.
    *
-   * @param bool
+   * @var bool
    */
   protected $requireWasCalled;