Updating the units of memory parameter
Updating the units of memory parameter

memory(-m) parameter in quota can receive different units like M, MB, G, or GB whereas in current doc's there is no parameter specified in the examples.
```
root@ubuntu:~# cf create-quota asif -m 1024
Creating quota asif as admin...
FAILED
Invalid memory limit: 1024
Byte quantity must be an integer with a unit of measurement like M, MB, G, or GB
```
cwest/docs-running-cf,cloudfoundry/docs-running-cf,bridgetkromhout/docs-running-cf,Orange-OpenSource/docs-running-cf,Gerg/docs-running-cf