Update 'Brotli/update-brotli.sh'

Brotli/update-brotli.sh

@@ -17,6 +17,7 @@ if [ $newver \> $curver ]; then
   # building nginx module
     #source Nginx
     cd /usr/local/src
+    git clone --recursive https://github.com/google/ngx_brotli.git
     apt source nginx
     apt build-dep nginx -y