officejs_support_request_ui: use "Submit New Support Request" for form name

to match the button on the front page

bt5/erp5_officejs_support_request_ui/SkinTemplateItem/portal_skins/erp5_officejs_support_request/SupportRequestModule_viewSupportRequestFastInputDialog.xml

@@ -137,7 +137,7 @@
         </item>
         <item>
             <key> <string>title</string> </key>
-            <value> <string>Add Support Request</string> </value>
+            <value> <string>Submit New Support Request</string> </value>
         </item>
         <item>
             <key> <string>unicode_mode</string> </key>