note to change misskey docker mount paths

content/en/docs/install/migrate/misskey.md

@@ -52,3 +52,7 @@ git pull --recurse-submodules
 pnpm install --frozen-lockfile
 sudo docker compose build
 ```
+
+Make sure to update the *mount paths* for volumes of the Sharkey
+container from `/misskey/` to `/sharkey/` (so your existing volumes
+will show up at the new path, inside the container).