Update README.md

Makefile

@@ -241,10 +241,12 @@ clean-vendor:
 
 .PHONY: clean
 clean: down
-	rm -rf $(VENV_HOST) $(WHEELHOUSE) vendor/ .venv-verify .venv-offline-test
+	rm -rf $(VENV_HOST) $(WHEELHOUSE) .venv-verify .venv-offline-test
 	rm -rf dist/ build/ *.spec src/pyhdwallet_frozen.py
 	find . -type d -name __pycache__ -exec rm -rf {} + 2>/dev/null || true
 	find . -type d -name "*.egg-info" -exec rm -rf {} + 2>/dev/null || true
+	# NOTE: vendor/ is kept (use 'make clean-vendor' to remove)
+
 
 # ---------- Platform-Aware Operations ----------
 .PHONY: info

README.md

@@ -241,7 +241,7 @@ make vendor-current
 # Or just the targets you need
 make install  # Works everywhere
 make test     # Works everywhere
-
+```
 
 ## 📦 Binary Distribution
 
@@ -259,9 +259,9 @@ chmod +x pyhdwallet-macos-arm64
 curl -LO https://github.com/user/hdwalletpy/releases/download/v1.1.0/pyhdwallet-linux
 chmod +x pyhdwallet-linux
 ./pyhdwallet-linux test
+```
 
 ---
-
 ## 🆕 What's New in v1.1.0
 
 - **BIP85 child mnemonic derivation** via new `gen-child` command