Fix typos on webook(s) link

Author: handrews

versions/3.1.1.md

@@ -2021,7 +2021,7 @@ $response.header.Location | https://example.org/subscription/1
 
 ##### Callback Object Examples
 
-The following example uses the user provided `queryUrl` query string parameter to define the callback URL.  This is similar to a [`webhooks`](#oasWebhooks), but differs in that the callback only occurs because of the initial request that sent the `queryUrl`.
+The following example uses the user provided `queryUrl` query string parameter to define the callback URL.  This is similar to a [webhook](#oasWebhooks), but differs in that the callback only occurs because of the initial request that sent the `queryUrl`.
 
 ```yaml
 myCallback: