Link to translation reports. (#2213)

Also explain how to generate the report locally.

TRANSLATIONS.md

@@ -214,3 +214,20 @@ translation and link it from the [translations page]. The idea is to celebrate
 the hard work, even if it is incomplete.
 
 [CODEOWNERS]: https://github.com/google/comprehensive-rust/blob/main/.github/CODEOWNERS
+
+## Status reports
+
+Two translation status reports are automatically generated:
+
+- [Translation status as checked in][translation-report]
+- [Translation status after syncing to the latest version of the source with msgmerge][synced-translation-report]
+
+You can also generate this report locally to see the effect of your local
+changes:
+
+```shell
+i18n-report translation-report.html po/*.po
+```
+
+[translation-report]: https://google.github.io/comprehensive-rust/translation-report.html
+[synced-translation-report]: https://google.github.io/comprehensive-rust/synced-translation-report.html

src/running-the-course/translations.md

@@ -28,6 +28,10 @@ recently updated translations:
 - [German][de] by [@Throvn] and [@ronaldfw].
 - [Italian][it] by [@henrythebuilder] and [@detro].
 
+The full list of translations with their current status is also available either
+[as of their last update][translation-report] or
+[synced to the latest version of the course][synced-translation-report].
+
 If you want to help with this effort, please see [our instructions] for how to
 get going. Translations are coordinated on the [issue tracker].
 
@@ -81,5 +85,7 @@ get going. Translations are coordinated on the [issue tracker].
 [@wnghl]: https://github.com/wnghl
 [@yaremam]: https://github.com/yaremam
 [@younies]: https://github.com/younies
+[translation-report]: https://google.github.io/comprehensive-rust/translation-report.html
+[synced-translation-report]: https://google.github.io/comprehensive-rust/synced-translation-report.html
 [our instructions]: https://github.com/google/comprehensive-rust/blob/main/TRANSLATIONS.md
 [issue tracker]: https://github.com/google/comprehensive-rust/issues/282