fix(cli): correct manual setup guide for bash/zsh during install

Author: XiNiHa

packages/cli/install.sh

@@ -1043,7 +1043,8 @@ WRAPPER_EOF
     echo -e "  vp was installed to: ${BOLD}${display_location}${NC}"
     echo ""
     echo "  Manual setup instructions:"
-    echo "    - Bash/Zsh: add \"$INSTALL_DIR_REF_POSIX/env\" to your shell config (~/.bashrc, ~/.zshrc, etc.)"
+    echo "    - Bash/Zsh: add the following to your shell config (~/.bashrc, ~/.zshrc, etc.):"
+    echo "        . \"$INSTALL_DIR_REF_POSIX/env\""
     echo "    - Fish: create ${XDG_CONFIG_HOME:-$HOME/.config}/fish/conf.d/vite-plus.fish with:"
     echo "        source \"$INSTALL_DIR_REF_POSIX/env.fish\""
     echo "    - Nushell: create a vendor autoload file with:"