add parameters definition

Signed-off-by: Thomas McWork <thomas.mc.work@gmail.com>

openapi.yml

@@ -32,6 +32,13 @@ paths:
       requestBody:
         $ref: '#/components/requestBodies/favoriteBody'
   /favorites/{id}:
+    parameters:
+      - name: id
+        in: path
+        description: ID of favorite to use
+        required: true
+        schema:
+          type: integer
     put:
       operationId: edit-favorites
       summary: 'Edit a favorite.'