docs: remove duplicate Firefox addon section (#927)

rijenkii · web-flow · commit 994ed05ddb8f · 2025-07-09T12:24:19.000+08:00
diff --git a/docs/guide/browser-extension.md b/docs/guide/browser-extension.md
@@ -69,7 +69,3 @@ This is the same as the Chrome extension, but you need to install it from the Ch
     </p>
   </a>
 </div>
-
-## Firefox
-
-We'll launch on the Firefox App Store once v7.x is stable.
