chore: add instruction to .git-blame-ignore-revs

Author: mattwang44

.git-blame-ignore-revs

@@ -1,11 +1,10 @@
-#################
-# Linting
-#################
-# isort
-0dcb6dd5973796cf12be34fdfd9fa761a6ba22d9
-# pep-naming
-ef09dbe9a03ebf4f649fd8830224a6c93ab422e7
-# bugbear
-e1dad3a0ca41d3f312f5be423711f577fd804f2f
-# pyupgrade
-399a7d64ddc2c2c857670c69890c24de8ba98610
+# When making commits that are strictly formatting/style changes, add the
+# commit hash here, so git blame can ignore the change.
+#
+# For more details, see:
+# https://git-scm.com/docs/git-config#Documentation/git-config.txt-blameignoreRevsFile
+
+0dcb6dd5973796cf12be34fdfd9fa761a6ba22d9  # isort
+ef09dbe9a03ebf4f649fd8830224a6c93ab422e7  # pep-naming
+e1dad3a0ca41d3f312f5be423711f577fd804f2f  # bugbear
+399a7d64ddc2c2c857670c69890c24de8ba98610  # pyupgrade