remove trailing whitespaces

.pre-commit-config.yaml

@@ -0,0 +1,16 @@
+# Apply to all files without committing:
+#   pre-commit run --all-files
+# Update this file:
+#   pre-commit autoupdate
+
+repos:
+  - repo: https://github.com/pre-commit/pre-commit-hooks
+    rev: v3.4.0
+    hooks:
+      - id: check-case-conflict
+      - id: check-json
+      - id: check-xml
+      - id: check-yaml
+      - id: fix-byte-order-marker
+      - id: trailing-whitespace
+        exclude: \.(min\.css|min\.js|po|mo)$