Update promisify.md

snippets/promisify.md

@@ -1,6 +1,6 @@
 ---
 title: promisify
-tags: adapter,function,promise,intermediate
+tags: function,promise,intermediate
 ---
 
 Converts an asynchronous function to return a promise.
@@ -20,4 +20,4 @@ const promisify = func => (...args) =>
 ```js
 const delay = promisify((d, cb) => setTimeout(cb, d));
 delay(2000).then(() => console.log('Hi!')); // // Promise resolves after 2s
-```
+```