Merge pull request #1279 from bijibox/doc-typo-fix

Fix typo in docs code example

Author: stof

Resources/doc/groups.md

@@ -178,7 +178,7 @@ class User extends BaseUser
     /**
      * @ORM\Id
      * @ORM\Column(type="integer")
-     * @ORM\generatedValue(strategy="AUTO")
+     * @ORM\GeneratedValue(strategy="AUTO")
      */
     protected $id;