Fix: Typo on overview.mdx (#1460)

* Fix: Typo on overview.mdx

the import helloWorldTask wasn't called correctly at an example

* Fix: Typo update on overview.mdx

Now the import is called `helloWorld` instead of `helloWorldTask` to be consistent with the filename as requested

Author: data-diego

docs/tasks/overview.mdx

@@ -37,7 +37,7 @@ You can trigger this in two ways:
 Here's how to trigger a single run from elsewhere in your code:
 
 ```ts Your backend code
-import { helloWorldTask } from "./trigger/hello-world";
+import { helloWorld } from "./trigger/hello-world";
 
 async function triggerHelloWorld() {
   //This triggers the task and returns a handle