doc: update link of ICU data slicer

F3n67u · web-flow · commit 6ac55fa337b5 · 2022-06-20T11:20:57.000+02:00
PR-URL: #43483 Reviewed-By: Luigi Pinca <luigipinca@gmail.com> Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com> Reviewed-By: Darshan Sen <raisinten@gmail.com>
diff --git a/tools/icu/README.md b/tools/icu/README.md
@@ -36,4 +36,4 @@ Note:
 * [The ICU Homepage][ICU]
 
 [ICU]: http://icu-project.org
-[ICU data slicer]: https://github.com/unicode-org/icu/blob/master/docs/userguide/icu_data/buildtool.md
+[ICU data slicer]: https://github.com/unicode-org/icu/blob/HEAD/docs/userguide/icu_data/buildtool.md
