add jsx extension to import path for button

Author: glitch003

docs/governance/litkey/lit-chain.mdx

@@ -1,7 +1,7 @@
 ---
 title: "Lit Chain"
 ---
-import AddLitChainButton from "/snippets/AddLitChainButton";
+import AddLitChainButton from "/snippets/AddLitChainButton.jsx";
 
 
 Lit Chain is an Arbitrum Orbit-based L3 rollup that acts as the shared state layer for Lit Protocol.