Changed the regex delimiter for "The url should match"

Using / as a regex delimiter when matching an url is a pain because it
forces to escape all / in the url (and there more often / than " in
an URL).

src/Behat/MinkExtension/Context/MinkDictionary.php

@@ -254,7 +254,7 @@ trait MinkDictionary
     /**
      * Checks, that current page PATH matches regular expression.
      *
-     * @Then /^the (?i)url(?-i) should match (?P<pattern>\/([^\/]|\\\/)*\/)$/
+     * @Then /^the (?i)url(?-i) should match (?P<pattern>"([^"]|\\")*")$/
      */
     public function assertUrlRegExp($pattern)
     {