Fix existing typo.

Author: n2ygk

docs/oidc.rst

@@ -278,7 +278,7 @@ which claims are advertised, you can override the ``get_discovery_claims`` metho
 a list of claim names to advertise. If your ``get_additional_claims`` uses the first form
 and you still want to advertise claims, you can also override ``get_discovery_claims``.
 
-In order to help lcients discover claims early, they can be advertised in the discovery
+In order to help clients discover claims early, they can be advertised in the discovery
 info, under the ``claims_supported`` key. In order for the discovery info view to automatically
 add all claims your validator returns, you need to use the second form (producing callables),
 because the discovery info views are requested with an unauthenticated request, so directly