minor symfony#16700 Fixed the wrong source name and the ja translation (hainey)

This PR was submitted for the 2.8 branch but it was merged into the 2.3 branch instead (closes symfony#16700).

Discussion
----------

Fixed the wrong source name and the ja translation

Commits
-------

90f3b94 Fixed the wrong source name and the ja translation

Author: fabpot

src/Symfony/Component/Form/Resources/translations/validators.ja.xlf

@@ -11,8 +11,8 @@
                 <target>アップロードされたファイルが大きすぎます。小さなファイルで再度アップロードしてください。</target>
             </trans-unit>
             <trans-unit id="30">
-                <source>The CSRF token is invalid.</source>
-                <target>CSRFトークンが無効です。</target>
+                <source>The CSRF token is invalid. Please try to resubmit the form.</source>
+                <target>CSRFトークンが無効です、再送信してください。</target>
             </trans-unit>
         </body>
     </file>