Fix examples for channel form field_errors tag

Author: intoeetive

docs/channels/channel-form/examples.md

@@ -121,7 +121,7 @@
                 <li>{error}</li>
                 {/global_errors}
                 {field_errors}
-                <li>{error}</li>
+                <li>{field}: {error}</li>
                 {/field_errors}
             </ul>
         {/if}

docs/channels/channel-form/overview.md

@@ -428,7 +428,7 @@ If you have chosen [inline error handling](#error_handling), you can display the
 
 ### `{field_errors}`
 
-    {field_errors}{error}{/field_errors}
+    {field_errors}{field}: {error}{/field_errors}
 
 If you have chosen [inline error handling](#error_handling), you can display field-related entry submission errors.