Tweak formatting

data/reusables/gpg/configure-gpg-signing.md

@@ -1,5 +1,5 @@
 1. If you have previously configured Git to use a different key format when signing with `--gpg-sign`, unset this configuration so the default format of `openpgp` will be used.
 
-  ```Shell{:copy}
-  git config --global --unset gpg.format
-  ```
+   ```Shell
+   $ git config --global --unset gpg.format
+   ```