docs(docker-compose): Typo

docker-compose/README.md

@@ -60,7 +60,7 @@ Your four answers translate as follows into rendered files.
         ...
     ```
 
-4. The last prompt for a `context` is a generic string to help you distinguish deployments. It can be whatever you want such as for example a team name, here `cncf` which shows up as a preset in an example env file. It defaults to `ctx` just it can't be empty.
+4. The last prompt for a `context` is a generic string to help you distinguish deployments. It can be whatever you want such as for example a team name, here `cncf` which shows up as a preset in an example env file. It defaults to `ctx` just so it can't be empty.
     ```
     .
     └── grafana