I moved kwallet to inputs since the package already refers to it in the
output. It looks like it'll be most useful with a future kwallet
service, perhaps as part of a KDE desktop service.

I also touched up the description to add @code tags to ssh-add and to
make sure each sentence was followed by two spaces.

Thanks! Patch pushed.

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Efraim Flashner   <efraim@flashner.co.il>   אפרים פלשנר
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