PR 147: Fix various typos

XProc specifications published by continuous integration on 29 Jun 2026 for PR 147.

This pull request fixes several typos. I noticed two of them recently in the course of my normal work. Then, I noticed that one of the typos fixed in https://github.com/xproc/3.0-specification/pull/1164/changes had the fix reflected in this repo but others didn't. I don't know why, and I hope nothing substantive got lost during the migration or other activity.

Specifications marked with are likely to have been changed by this commit.

Changed files

According to git, the following sources were changed by this commit:

Commit: af1c8445fbe20c72ec8798cc2302e9500fc89dba