Update UsingEvaluationsDataAdapter.mdx (#1986)

docs/client/javascript-mono/UsingEvaluationsDataAdapter.mdx

@@ -19,7 +19,7 @@ and provide it to the Statsig client via [StatsigOptions.dataAdapter](/client/ja
 
 When calling `StatsigClient.initializeSync`, the `StatsigEvaluationsDataAdapter` will load values
 from Cache and provide them to the client. The client will also call refresh in the background via
-`StatsigEvaluationsDataAdapter.getDataAsync`, leading to values lagging until the next time `initializeSync` or `updateUserSync` is called.
+`StatsigEvaluationsDataAdapter.getDataAsync`, leading to values lagging until the next time `initializeSync` or `updateUserSync` is called. If you do not want this background refresh to happen, you can pass in `disableBackgroundCacheRefresh` in the options when calling `initializeSync`.
 
 In practice (Unless an additional update call is made), this means that for the very first session of a given user, there will be no values, and not until the next session will the cache have values.