docs: Rename rofl app.md to app.mdx

Since it now uses docusaurus extensions.

Author: jberci

docs/rofl/app.md docs/rofl/app.mdxdocs/rofl/app.md renamed to docs/rofl/app.mdx

@@ -20,7 +20,7 @@ This way, your ROFL client will sync more quickly and not want to start on any
 other network or ParaTime. Read the [Consensus Trust Root] chapter to learn more
 about obtaining a correct block for the root of trust.
 
-[`src/main.rs`]: app.md#app-definition
+[`src/main.rs`]: app.mdx#app-definition
 [Consensus Trust Root]: trust-root.md
 
 ## Register the App

docs/rofl/deployment.md

@@ -10,7 +10,7 @@ steps you will be able to start building your first ROFL app!
 
 If you already have everything set up, feel free to skip to the [next chapter].
 
-[next chapter]: app.md
+[next chapter]: app.mdx
 
 :::info
 

docs/rofl/prerequisites.md

@@ -5,7 +5,7 @@ _consensus trust root_. The preconfigured trust root is valid for the current
 deployment of Sapphire Testnet. This chapter briefly describes what the trust
 root is, how it can be securely derived and configured in your ROFL app.
 
-[ROFL app example]: app.md
+[ROFL app example]: app.mdx
 
 ## The Root of Trust
 

docs/rofl/trust-root.md

@@ -37,5 +37,5 @@ npx hardhat oracle-query 0x5FbDB2315678afecb367f032d93F642f64180aa3 --network sa
 
 For more information check out the [ROFL tutorial].
 
-[ROFL tutorial]: https://github.com/oasisprotocol/oasis-sdk/blob/main/docs/rofl/app.md
+[ROFL tutorial]: https://github.com/oasisprotocol/oasis-sdk/blob/main/docs/rofl/app.mdx