Update install-release.sh

release/install-release.sh

@@ -280,7 +280,7 @@ Help(){
     echo "  -h, --help            Show help"
     echo "  -p, --proxy           To download through a proxy server, use -p socks5://127.0.0.1:1080 or -p http://127.0.0.1:3128 etc"
     echo "  -f, --force           Force install"
-    echo "      --version         Install a particular version"
+    echo "      --version         Install a particular version, use --version 3.15"
     echo "  -l, --local           Install from a local file"
     echo "      --remove          Remove installed V2Ray"
     echo "  -c, --check           Check for update"