Make README more clear

ci/build/release-github-assets.sh

@@ -11,7 +11,7 @@ main() {
   source ./ci/lib.sh
 
   download_artifact release-packages ./release-packages
-  local assets=(./release-packages/code-server*"$VERSION"*{.tar.gz,.deb,.rpm})
+  local assets=(./release-packages/code-server*"$VERSION"*{.tar.gz,.zip,.deb,.rpm})
   for i in "${!assets[@]}"; do
     assets[$i]="--attach=${assets[$i]}"
   done