Fix typo in RelayHooks-ApiReference.md (#2931)

Summary:
see also: https://github.com/eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee/eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee
Pull Request resolved: #2931

Differential Revision: D18354350

Pulled By: kassens

fbshipit-source-id: ba0c6fb0da9a7c90e29cf930294ec5bcae35a065

website/versioned_docs/version-experimental/RelayHooks-ApiReference.md

@@ -626,5 +626,5 @@ fetchQuery<AppQuery>(
 
 #### Behavior
 
-* `fetchQuery` will automatically save th fetched data to the in-memory Relay store, and notify any components subscribed to the relevant data.
+* `fetchQuery` will automatically save the fetched data to the in-memory Relay store, and notify any components subscribed to the relevant data.
 * `fetchQuery` will ***NOT*** retain the data for the query, meaning that it is not guaranteed that the data will remain saved in the Relay store at any point after the request completes. If you wish to make sure that the data is retained outside of the scope of the request, you need to call `environment.retain()` directly on the query to ensure it doesn't get deleted. See our section on [Controlling Relay's GC Policy](a-guided-tour-of-relay/#controlling-relays-garbage-collection-policy) for more details.