Split project webhooks API docs from main projects API docs

doc/api/group_webhooks.md

@@ -10,8 +10,8 @@ DETAILS:
 **Tier:** Premium, Ultimate
 **Offering:** GitLab.com, Self-managed, GitLab Dedicated
 
-Interact with [webhooks](../user/project/integrations/webhooks.md) at the group level by using the REST API. Also called group hooks.
-These are different from [system hooks](system_hooks.md) that are system wide and [project hooks](projects.md#hooks) that are limited to one project.
+Interact with group [webhooks](../user/project/integrations/webhooks.md) by using the REST API. Also called group hooks.
+These are different from [system hooks](system_hooks.md) that are system wide and [project webhooks](project_webhooks.md) that are limited to one project.
 
 Prerequisites:
 

doc/user/project/integrations/webhooks.md

@@ -225,7 +225,7 @@ To inspect the request and response details of a webhook event:
 
 To send the request again with the same data and the same [`Idempotency-Key` header](#delivery-headers)), select **Resend Request**.
 If the webhook URL has changed, you cannot resend the request.
-For programmatic resends, please refer to our [API documentation](../../../api/projects.md#resend-project-hook-event).
+For resending programmatically, refer to our [API documentation](../../../api/project_webhooks.md#resend-a-project-webhook-event).
 
 ## Webhook receiver requirements
 
@@ -546,8 +546,8 @@ when webhooks are sent synchronously from Rails nodes, including when:
 ## Related topics
 
 - [Webhook events and webhook JSON payloads](webhook_events.md)
-- [Project hooks API](../../../api/projects.md#hooks)
-- [Group hooks API](../../../api/group_webhooks.md)
+- [Project webhooks API](../../../api/project_webhooks.md)
+- [Group webhooks API](../../../api/group_webhooks.md)
 - [System hooks API](../../../api/system_hooks.md)
 
 ## Troubleshooting