Fixed broken mailto

Author: michaelbarnes

migration-guides/mongodb-atlas.mdx

@@ -30,7 +30,7 @@ Please review this guide to understand the required changes and prerequisites. F
 If you need further assistance at any point, you can:
 * [Set up a call](https://calendly.com/powersync/powersync-chat) with PowerSync engineers.
 * Ask us anything on our [Discord server](https://discord.gg/powersync).
-* [Contact us]([email protected]) through email.
+* [Contact us](mailto:[email protected]) through email.
 
 ## Architecture: Before and After
 If you have MongoDB Atlas Device Sync deployed today, at a high level your architecture will look something like this: