Fixing i18n README.chromium

Bug: b/442971025
Change-Id: Ia4263095db0715a99c35c0b7b3507ff1d1589f8f
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/6914676
Reviewed-by: Simon Zünd <szuend@chromium.org>
Auto-Submit: Jordan Brown <rop@google.com>
Reviewed-by: Danil Somsikov <dsv@chromium.org>
Commit-Queue: Danil Somsikov <dsv@chromium.org>

Author: Jordan

third_party/i18n/README.chromium

@@ -1,7 +1,8 @@
 Name: Lighthouse i18n infrastructure scripts
 Short Name: i18n
 URL: https://github.com/GoogleChrome/lighthouse
-Version: f3d0e3459d8fd15b055148dec0ae4e430df6495b
+Revision: f3d0e3459d8fd15b055148dec0ae4e430df6495b
+Update Mechanism: Manual
 License: Apache-2.0
 License File: LICENSE
 Security Critical: no