Apply suggestions from code review

Co-authored-by: Martin Pitt <[email protected]>

HACKING.md

@@ -199,15 +199,15 @@ The Python bridge can be used interactively on a local machine:
 To make it easy to test out channels without having to write out messages
 manually, `cockpit.misc.print` can be used:
 
-   PYTHONPATH=src python3 -m cockpit.misc.print open fslist1 path=/etc watch=False | PYTHONPATH=src -m cockpit.bridge
+PYTHONPATH=src python3 -m cockpit.misc.print open fslist1 path=/etc watch=False | PYTHONPATH=src python3 -m cockpit.bridge
 
 These shell aliases might be useful when experimenting with the protocol:
 
     alias cpy='PYTHONPATH=src python3 -m cockpit.bridge'
     alias cpf='PYTHONPATH=src python3 -m cockpit.misc.print'
 
 When working with the Python bridge on test images, note that `RHEL/CentOS 8`,
-`debian-stable` and `ubuntu-2204` use the C bridge. So if you want to
+`debian-stable`, and `ubuntu-2204` still use the C bridge. So if you want to
 explicitly have the Python bridge on those images use:
 
     ./test/image-prepare --python