Merge branch '3.4' into 4.2

* 3.4:
  [symfony#11139] fix a minor typo

Author: xabbuh

security/security_checker.rst

@@ -14,7 +14,7 @@ First, install the security checker in your project:
 .. code-block:: terminal
 
     # require at least the 5.0 version of the package because older versions
-    # checked the security vulnerabilities using an URL that is no longer available
+    # checked the security vulnerabilities using a URL that is no longer available
     $ composer require sensiolabs/security-checker:^5.0
 
 Then run this command: