Fix style in README

README.md

@@ -23,19 +23,19 @@
     container, import it, remove the password and export the whole key again.
 
     ```bash
-    $ docker cp sign-key.asc 8765:/
+    host$ docker cp sign-key.asc 8765:/
     8765# gpg --import sign-key.asc
     8765# gpg --edit-key
     > passwd
     > save
     8765# gpg --edit-key
     8765# gpg --armor --output sign-key-unprotected.asc --export-secret-key sign-in-ci@exapmle.com
-    $ docker cp 8765:sign-key-unprotected.asc .
+    host$ docker cp 8765:sign-key-unprotected.asc .
 
 4. Add a protected secret CI variable `$GPG_KEY` and paste the contents of
     `sign-key-unprotected.asc`.
 
-5. Setup [CI](.gitlab-ci.yml]
+5. Setup [CI](.gitlab-ci.yml)
 
-6. *Note: Anybody, who can push to (protected) branches has access to the
-private key!*
+6. **Note: Anybody, who can push to (protected) branches or has access to the
+runner server, has access to the private key!**