Update deployments/docker/README.md

Co-authored-by: Thomas Fossati <[email protected]>

deployments/docker/README.md

@@ -6,7 +6,7 @@ deployment of Veraison.
 You will need to make sure you have `make`, `git`, `docker` (and its builder),
 and `jq` installed on your system. Optionally, `tmux` can be used to
 conveniently monitor output from running services. The CLI front-end relies on
-`bash` shell, which should already be installed most systems, but if not, it
+`bash` shell, which should already be installed on most systems, but if not, it
 would also need to be installed.
 
 ```sh