forge: fix broken proxy field

This dialog had a proxy field to another field from the same dialog (
BusinessTemplate_viewGitLogin/your_auth ).
When dialog was renamed, proxy field got broken.

To ease maintenance, proxy to the same field as BusinessTemplate_viewGitLoginDialog/your_auth
is using.

bt5/erp5_forge/SkinTemplateItem/portal_skins/erp5_vcs/BusinessTemplate_viewGitLoginDialog/your_auth.xml

@@ -83,11 +83,11 @@
                 </item>
                 <item>
                     <key> <string>field_id</string> </key>
-                    <value> <string>remote_url</string> </value>
+                    <value> <string>my_string_field</string> </value>
                 </item>
                 <item>
                     <key> <string>form_id</string> </key>
-                    <value> <string>BusinessTemplate_viewGitLogin</string> </value>
+                    <value> <string>Base_viewFieldLibrary</string> </value>
                 </item>
                 <item>
                     <key> <string>hidden</string> </key>