fix broken links

Author: mwood23

versioned_docs/version-0.11/changelog.md

@@ -140,7 +140,7 @@ In this release, Devvit introduces a new way for apps to let users create conten
 - **Saves the user time and effort**. It’s easy for users to jump into the conversation.
 - **Improves retention**. When people interact with your app, they’re more likely to stick around, and continued user engagement helps your app reach new people. Total positive feedback loop!
 
-Check out our new [user action API](./capabilities/userActions.mdx) to see how you can add this to your own app.
+Check out our new [user action API](./capabilities/userActions.md) to see how you can add this to your own app.
 
 Also in this release, we’ve streamlined developer communication. New devs will get automatic email notifications when they [upload](./dev_guide.mdx) their first app and every time an app is approved for [publishing](./publishing.md).
 
@@ -312,7 +312,7 @@ Release 0.11.4 introduces [payments](./payments/payments_overview.md)! This pilo
 
 Since this is a pilot program, you'll need to submit an [enrollment form](https://forms.gle/TuTV5jbUwFKTcerUA) before developing and playtesting payments in your app. Before you publish your app, you’ll need to complete additional steps outlined in the payments documentation.
 
-We’ve also added a new [template](./payments/payments_add.mdx) to help you set up payments functionality without needing to code a full app from scratch.
+We’ve also added a new [template](./payments/payments_add.md) to help you set up payments functionality without needing to code a full app from scratch.
 
 **New features**
 This release also includes:

versioned_docs/version-0.12/capabilities/server/overview.md

@@ -32,7 +32,7 @@ Allows you to build an app where the moderator can store secret keys in a safe a
 
 Allows you to run automated server-side tasks when certain events happen on Reddit, for example: when a new post is created, or when a new comment is created.
 
-## [User actions](./userActions.md)
+## [User actions](./userActions.mdx)
 
 Allows you to execute some actions, like posting or commenting, on behalf of the user. This means that these new posts or comments will not show up as created by the app, but by the user that is currently using the app. Access to this feature is subject to review by Admins.