Add SYNC comment reminder

Author: ljwagerfield

src/public/shared/UrlBuilder.ts

@@ -61,6 +61,7 @@ export class UrlBuilder {
     // a) Call encodeURIComponent() on the file path. (This allows file paths to contain ANY character.)
     // b) Replace all occurrences of "%2F" with "/". (Allows file paths to appear as hierarchical paths on the URL.)
     // c) Replace all occurrences of "!" with "%21". (Prevents file paths with "!" inside being treated as "query bangs".)
+    // SYNC: FileUrlUtils.makeFileUrl (internal)
     const filePathEncoded = encodeURIComponent(params.filePath).replace(/%2F/g, "/").replace(/!/g, "%21");
     return `${cdnUrl}/${params.accountId}/${prefix}${filePathEncoded}`;
   }