json: Fix unbalanced braces in example code

Author: igorburago

json.h

@@ -97,8 +97,8 @@ EXAMPLES:*/
     struct json_token *ent = json_array_begin(a);
     for (i = 0; i < a->children && ent; ++i) {
         struct json_token *pos = json_query(ent, ent->sub, "position");
-        /*... */
-        ent = json_array_next(ent);}
+        /* ... */
+        ent = json_array_next(ent);
     }
 #endif