Update instruction on git blame

.git-blame-ignore-revs

@@ -1,8 +1,14 b''
 # When making commits that are strictly formatting/style changes, add the
-# commit hash here, so git blame can ignore the change.
-# See docs for more details:
+# commit hash here, so git blame can ignore the change. See docs for more
+# details:
 # https://git-scm.com/docs/git-config#Documentation/git-config.txt-blameignoreRevsFile
-
+#
+# 
+# You should be able to execute either
+# ./tools/configure-git-blame-ignore-revs.bat or
+# ./tools/configure-git-blame-ignore-revs.sh
+#
 # Example entries:
+#
 # <full commit hash>  # initial black-format
 # <full commit hash>  # rename something internal