diff --git a/.git-blame-ignore-revs b/.git-blame-ignore-revs
index ce690564..958eb1af 100644
--- a/.git-blame-ignore-revs
+++ b/.git-blame-ignore-revs
@@ -1,2 +1,2 @@
-# Change indent size of shell scripts
+# Change indent size of shell script files to match scripts in CI config
 946918579413996845b77e146aa8eb3c6f40f7ab
diff --git a/.markdownlint-cli2.yaml b/.markdownlint-cli2.yaml
index 2782f6dc..9f27f0b0 100644
--- a/.markdownlint-cli2.yaml
+++ b/.markdownlint-cli2.yaml
@@ -2,7 +2,7 @@
 config:
   line-length: false # MD013
   no-duplicate-heading: false # MD024
-  no-blanks-blockquote: false # MD028
+  no-blanks-blockquote: false # MD028 (this warns valid GFM alerts usage)
   no-inline-html: false # MD033
   no-emphasis-as-heading: false # MD036
 
diff --git a/Cargo.toml b/Cargo.toml
index 5c5ebff6..83a59899 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -3,7 +3,7 @@ resolver = "2"
 members = ["tools/codegen", "tools/manifest-schema"]
 
 # This table is shared by projects under github.com/taiki-e.
-# It is not intended for manual editing.
+# Expect for unexpected_cfgs.check-cfg, it is not intended for manual editing.
 [workspace.lints.rust]
 deprecated_safe = "warn"
 improper_ctypes = "warn"