Re: typos (and more)

On Fri, Sep 24, 2021 at 04:58:27PM -0500, Justin Pryzby wrote:
> A compilation of fixes for master.

Thanks Michael for applying fixes to user-facing docs (I hadn't realized that
the 2nd one needed to be backpatched).

This fixes an file I failed to include in the "recheck" patch and more typos
for extended stats (+Tomas).

+Andres (Jit), +Zhihong (file header comments).