docs: fix simple typo, retunred -> returned
There is a small typo in ibm_watson/discovery_v1.py.
Should read `returned` rather than `retunred`.
@@ -1815,7 +1815,7 @@ class DiscoveryV1(BaseService):
parameter.
:param bool spelling_suggestions: (optional) When `true` and the
**natural_language_query** parameter is used, the **natural_languge_query**
- parameter is spell checked. The most likely correction is retunred in the
+ parameter is spell checked. The most likely correction is returned in the
**suggested_query** field of the response (if one exists).
**Important:** this parameter is only valid when using the Cloud Pak
version of Discovery.
