doc: Before release, update translations

I forgot to do this before today's v0.0.26, oops.

The process is only semi-automated at this point (see #276).  It
was fresher in mind as of the last couple of releases, but I didn't
think of it today.  That's what a checklist is for; add it there.

Author: gnprice

docs/release.md

@@ -6,6 +6,9 @@
   Flutter and packages dependencies, do that first.
   For details of how, see our README.
 
+* Update translations from Weblate.
+  See `git log --stat --grep eblate` for previous examples.
+
 * Write an entry in `docs/changelog.md`, under "Unreleased".
   Commit that change.