Update docs. Make PULL up to date, remove deprecated falg and update PUSH

Docker-DCO-1.1-Signed-off-by: Guillaume J. Charmes <guillaume@charmes.net> (github: creack)

docs/sources/reference/commandline/cli.rst

@@ -1007,12 +1007,10 @@ The last container is marked as a ``Ghost`` container. It is a container that wa
 
 ::
 
-    Usage: docker pull NAME
+    Usage: docker pull NAME[:TAG]
 
     Pull an image or a repository from the registry
 
-      -t, --tag="": Download tagged image in repository
-
 
 .. _cli_push:
 
@@ -1021,7 +1019,7 @@ The last container is marked as a ``Ghost`` container. It is a container that wa
 
 ::
 
-    Usage: docker push NAME
+    Usage: docker push NAME[:TAG]
 
     Push an image or a repository to the registry