Merge pull request #268 from ubuntu/schopin-pro-patch-1

contributors: manual merge: submit MP against `debian/sid`

Author: rkratky

docs/contributors/merging/merge-manually.md

@@ -207,7 +207,7 @@ Next step: Check the source for errors.
 $ git push kstenerud merge-lp1802914-disco
 ```
 
-Then create a MP manually in Launchpad, and save the URL.
+Then create a MP manually in Launchpad against the `debian/sid` branch (**not** `ubuntu/devel`), and save the URL.
 
 Next step: {ref}`merge-update-the-merge-proposal`.