Get rid of vague memunits from the man page
Our man page has vague lines like ``` **BandwidthRate** __N__ **bytes**|**KB**|**MB**|**GB**:: ``` and ``` (Default: 1 GB) ``` Wouldn't it be nicer if we said Bytes rather than B in each case? Then it would be the default for people to say KBytes, and just a happy coincidence that our code happens to handle the shorthand version of it too.
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