staging: rtl8188eu: core: add comma within a comment

Add a comma to separate repeated words in a comment. The comma preserves
the meaning of the comment while also stopping the checkpatch warning:
WARNING: Possible repeated word: 'very'.

Signed-off-by: Deborah Brouwer <deborahbrouwer3563@gmail.com>
Link: https://lore.kernel.org/r/20210403210930.17781-1-deborahbrouwer3563@gmail.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>