(docs) Correct webhook reference typo (#1231)

Author: devalog

fern/products/docs/pages/api-references/generate-webhook-ref.mdx

@@ -76,7 +76,7 @@ You can read more about how to define webhooks in your Fern Definition [here](/l
 </Tabs>
 
 ### Include more than one webhook reference
-To include multiple webhook definitions in your documentation, use the `webhook-name` property:
+To include multiple webhook definitions in your documentation, use the `api-name` property:
 
 ```yaml title="docs.yml"
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