chore: only exclude ts & js from site

Author: NathanFlurry

.gitattributes

@@ -21,5 +21,6 @@ site/public/docs/**/*.md linguist-generated=true
 
 # I refuse to admit there's more TypeScript than Rust in this codebase
 frontend/** linguist-generated=true
-site/** linguist-generated=true
+site/**/*.ts linguist-generated=true
+site/**/*.js linguist-generated=true