refactor: remove extra example

Commands/apic/metadata/_export.md

@@ -28,5 +28,4 @@ Exports the metadata schema.
 - Export Custom Metadata Schema Only
     ```bash
         apic metadata export -g contoso-resources -n contoso --assignments api --file-name filename.json --custom-metadata-only
-        apic metadata export -g contoso-resources -n contoso --assignments api --file-name filename.json --custom-metadata-only true
     ```

Commands/tree.json

@@ -6356,8 +6356,7 @@
                       },
                       {
                         "commands": [
-                          "apic metadata export -g contoso-resources -n contoso --assignments api --file-name filename.json --custom-metadata-only",
-                          "apic metadata export -g contoso-resources -n contoso --assignments api --file-name filename.json --custom-metadata-only true"
+                          "apic metadata export -g contoso-resources -n contoso --assignments api --file-name filename.json --custom-metadata-only"
                         ],
                         "name": "Export Custom Metadata Schema Only"
                       }