contents: fix typo in Partytown (#2)

Author: tonyantony300

questions/describe-the-difference-between-script-async-and-script-defer/en-US.mdx

@@ -111,7 +111,7 @@ If a script relies on a fully-parsed DOM, the `defer` attribute will be useful i
 - The `async` attribute should be used for scripts that are not critical to the initial rendering of the page and do not depend on each other, while the `defer` attribute should be used for scripts that depend on / is depended on by another script.
 - The `async` and `defer` attributes are ignored for scripts that have no `src` attribute.
 - `<script>`s with `defer` or `async` that contain `document.write()` will be ignored with a message like "A call to `document.write()` from an asynchronously-loaded external script was ignored".
-- Even though `async` and `defer` help to make script downloading asynchronous, the scripts are still eventually executed on the main thread. If these scripts are computationally intensive, it can result in laggy/frozen UI. [Partydown](https://partytown.builder.io/) is a library that helps relocate script executions into a [web worker](https://developer.mozilla.org/en-US/docs/Web/API/Web_Workers_API) and off the [main thread](https://developer.mozilla.org/en-US/docs/Glossary/Main_thread), which is great for third-party scripts where you do not have control over the code.
+- Even though `async` and `defer` help to make script downloading asynchronous, the scripts are still eventually executed on the main thread. If these scripts are computationally intensive, it can result in laggy/frozen UI. [Partytown](https://partytown.builder.io/) is a library that helps relocate script executions into a [web worker](https://developer.mozilla.org/en-US/docs/Web/API/Web_Workers_API) and off the [main thread](https://developer.mozilla.org/en-US/docs/Glossary/Main_thread), which is great for third-party scripts where you do not have control over the code.
 
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