fix security.md OAuth 2.0 example

Author: konradzagozda

specification/security.md

@@ -159,8 +159,9 @@ components:
       flows:
         clientCredentials:
           tokenUrl: https://learn.openapis.org/oauth/2.0/token
-            # Only reading the board allow with delegated access
-            board:read: Read the board
+            scopes:
+              # Only reading the board allow with delegated access
+              board:read: Read the board
     user2AppOauth:
         authorizationCode:
           authorizationUrl: https://learn.openapis.org/oauth/2.0/auth