Improve docs

Author: mevdschee

README.md

@@ -780,4 +780,5 @@ The above test run (including starting up the databases) takes less than one min
     root@b7ab9472e08f:/php-crud-api# 
 
 As you can see the "run.sh" script gives you access to a prompt in a chosen the docker environment.
-In this environment the local files are mounted. This allows for easy debugging on different environments.
+In this environment the local files are mounted. This allows for easy debugging on different environments.
+You may type "exit" when you are done.