Update 'get_iplayer'

Some useful commands

get_iplayer

@@ -3,7 +3,7 @@ Running get_iplayer https://hub.docker.com/r/thespad/get_iplayer
 Web interface is at:-
 http://ip-address:1935/
 
-Gets into the command line on the container so you can add pid's manually
+Gets into the command line on the container so you can add PIDs manually
 $ docker exec -it get_iplayer /bin/bash
 
 Add a series by series id