Fix .bzl style guide link

This was previously linking to an HTML file which doesn't exist.

Closes #7047.

PiperOrigin-RevId: 228912997

site/docs/skylark/skylint.md

diff --git a/site/docs/skylark/skylint.md b/site/docs/skylark/skylint.md
index e860fc3..799df83 100644
--- a/site/docs/skylark/skylint.md
+++ b/site/docs/skylark/skylint.md
@@ -5,7 +5,7 @@
 
 # Skylint
 
-[Style guide](../skylark/bzl-style.html)
+[Style guide](../skylark/bzl-style.md)
 
 This document explains how to use Skylint, the Starlark linter.