docs(rest-api): consider the case that no content is found

Author: AndreaGiulianelli

docs/rest-api/rest-api-docs.yml

@@ -71,6 +71,8 @@ paths:
             application/json:
               schema:
                 $ref: '#/components/schemas/Room'
+        '204':
+          description: no content about the room was found
         '404':
           description: room not found
         '500':
@@ -148,6 +150,8 @@ paths:
             application/json:
               schema:
                 $ref: '#/components/schemas/MedicalTechnology'
+        '204':
+          description: no content about the medical technology was found
         '404':
           description: medical technology not found
         '500':