doc: unify import order in CCM example

Refs: #39043

PR-URL: #42394
Reviewed-By: Rich Trott <[email protected]>
Reviewed-By: Richard Lau <[email protected]>
Reviewed-By: Mestery <[email protected]>
Reviewed-By: Luigi Pinca <[email protected]>
Reviewed-By: Colin Ihrig <[email protected]>
Reviewed-By: Akhil Marsonya <[email protected]>
Reviewed-By: Darshan Sen <[email protected]>

doc/api/crypto.md

@@ -5571,12 +5571,12 @@ console.log(receivedPlaintext);
 ```
 
 ```cjs
+const { Buffer } = require('buffer');
 const {
   createCipheriv,
   createDecipheriv,
   randomBytes,
 } = require('crypto');
-const { Buffer } = require('buffer');
 
 const key = 'keykeykeykeykeykeykeykey';
 const nonce = randomBytes(12);