Update index.md

docs/pages/index.md

@@ -17,7 +17,7 @@ To install it, just add it to your project's Flake inputs:
 ```
 
 ## Basic Usage
-To build a basic app using one of the [supported languages](/reference/supported-languages.md), put a simple `flake.nix` in your project's root:
+To build a basic app using one of the [supported languages](/reference/supported-languages.html), put a simple `flake.nix` in your project's root:
 ```nix
 {
   description = "My fantastic new containerized project";
@@ -33,4 +33,4 @@ To build a basic app using one of the [supported languages](/reference/supported
 Now, you can build it with `nix build .#container`, and then load it into Docker (or Podman) with `docker load < result`.
 > **Note:** Unfortunately, at least at the moment, this image will only work if built on Linux.
 
-For a [custom plan](/guides/custom-plans.html), replace `build` with `buildCustomPlan`.
+For a [custom plan](/guides/custom-plans.html), replace `build` with `buildCustomPlan`.