docs: fix typo (#85)

Author: jamaluddinrumi

docs/1.guide/2.hooks.md

@@ -20,7 +20,7 @@ const hooks = defineHooks({
     return {
       headers: {}
     }
-  }
+  },
 
   open(peer) {
     console.log(`[ws] open: ${peer}`);
@@ -40,5 +40,5 @@ const hooks = defineHooks({
   error(peer, error) {
     console.log("[ws] error", peer, error);
   },
-};
+});
 ```