fix dl link

Author: dyu

README.md

@@ -5,7 +5,7 @@ a simple self-hosted bookmarking app that can import bookmarks from delicious an
 ### Quickstart
 ```sh
 mkdir -p target/standalone && cd target/standalone
-wget https://unpkg.com/dyu-bookmarks@0.4.1/bin/bookmarks-linux-standalone-x64.tar.gz
+wget https://cdn.jsdelivr.net/npm/dyu-bookmarks@0.4.1/bin/bookmarks-linux-standalone-x64.tar.gz
 tar -xzf bookmarks-linux-standalone-x64.tar.gz
 ./start.sh
 ```