The used format of `-X, --long=VALUE` is not a valid option-list entry,
even though it is very commonly used all over the linux man-pages. Use
the supported format of `-X VALUE, --long=VALUE`, which will format
correctly in the man-page and html outputs.
For reference, these formats are valid in RST option-lists:
-a Short option
-c arg Short option with arg.
--long Long option.
-2, --two Aliases on a single line.
-f FILE, --file=FILE Aliases with arguments.
/V VMS/DOS-style option.
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