chore: Add asset prefixes for es and pt

Author: LizBaker

env.js

@@ -10,6 +10,12 @@ const assetPrefix = () => {
   if (process.env.BUILD_LANG === 'kr') {
     return 'https://docs-website-kr.netlify.app';
   }
+  if (process.env.BUILD_LANG === 'es') {
+    return 'https://docs-website-es.netlify.app';
+  }
+  if (process.env.BUILD_LANG === 'pt') {
+    return 'https://docs-website-pt.netlify.app';
+  }
   return '';
 };