Update surrealdb.mdx

docs/pages/getting-started/adapters/surrealdb.mdx

@@ -158,7 +158,7 @@ const clientPromise = new Promise<ExperimentalSurrealHTTP<typeof fetch>>(
   }
 )
 
-// Export a module-scoped MongoClient promise. By doing this in a
+// Export a module-scoped Promise<Surreal>. By doing this in a
 // separate module, the client can be shared across functions.
 export default clientPromise
 ```