bug#76621: [PATCH] sxml: Fix typo in a comment.

[Ludovic Courtès]

Tomas Volf <~@wolfsden.cz> skribis:

> * module/sxml/xpath.scm: Fix typo in a comment.
> * module/sxml/upstream/SXPath-old.scm: Same.
> * doc/ref/sxml.texi (SXPath): Reflect in the documentation.

Applied, thanks.