chore(config): improve comments

Author: antongolub

packages/metro-config/src/loadConfig.js

@@ -154,8 +154,8 @@ function mergeConfig<T: $ReadOnly<InputConfigT>>(
   });
 }
 
-// mergeConfig is public, we should try to keep its API stable
-// This trick is necessary to pass proper cwd to `populateSync`
+// `mergeConfig` is public, so we should try to keep its API stable
+// This trick is necessary to pass the proper cwd to the internal `populateSync` call
 const mergeConfigHooked = <T: $ReadOnly<InputConfigT>>(
   cwd: string,
   base: T,