add comment about experimental version

Author: tomasnyberg

packages/language-support/src/index.ts

@@ -5,6 +5,8 @@ export type { DbSchema } from './dbSchema';
 export { _internalFeatureFlags } from './featureFlags';
 export {
   formatQuery,
+  // Currently, the experimental version is the same as the regular version. Keeping it here rather
+  // than removing it since we are likely to reintroduce an experimental version soon.
   formatQuery as formatQueryExperimental,
 } from './formatting/formatting';
 export { antlrUtils } from './helpers';