docs: Add documentation for integration APIs (#2300)

swagger/parameters/hook_id.yml

@@ -0,0 +1,6 @@
+in: path
+name: hook_id
+schema:
+  type: integer
+required: true
+description: The numeric ID of the integration hook

swagger/parameters/index.yml

@@ -4,6 +4,9 @@ account_id:
 team_id:
   $ref: ./team_id.yml
 
+hook_id:
+  $ref: ./hook_id.yml
+
 source_id:
   $ref: ./source_id.yml
 

swagger/parameters/team_id.yml

@@ -3,4 +3,4 @@ name: id
 schema:
   type: integer
 required: true
-description: The id of the team to be updated
+description: The ID of the team to be updated