[API] Inclusão de rota na API do adm para associar resposta correta à determinada questão.

Api/Competition.Adm.API.yaml

@@ -300,7 +300,6 @@ paths:
         schema:
           format: int32
           type: integer
-          
     delete:
       tags:
         - exams
@@ -309,6 +308,29 @@ paths:
       responses:
         '200':
           description: 'Successfully deleted'
+  /exams/{examId}/questions/{questionId}/answer:
+    patch:
+      tags:
+        - exams
+      summary: Update a question setting its correct answer
+      description: Updates questions of a exam
+      requestBody:
+        content:
+          application/json:
+            schema:
+              type: array
+              items:
+                $ref: 'https://gitlab.dev.evologica.com.br/Competify/Docs/raw/master/Api/components/schemas.yaml/#/Question'
+        required: true
+      responses:
+        '200':
+          description: ''
+          content:
+            application/json:
+              schema:
+                type: object
+                oneOf:
+                  - $ref: 'https://gitlab.dev.evologica.com.br/Competify/Docs/raw/master/Api/components/schemas.yaml/#/Question'           
   /exams/{examId}/groups:
     get:
       tags: