Account for Firefox in extension and improve instances page

pages/extension.mdx

@@ -30,7 +30,7 @@ Sometimes your browser may block downloading or installing CRX file from outside
 
 ## Loading a ZIP file
 
-1. Download and unpack the ZIP file from [here](https://github.com/sussy-code/browser-ext/releases/download/1.1.4/1.1.4-mwext-zip.zip).
+1. Download and unpack the ZIP file from [here](https://github.com/sussy-code/browser-ext/releases/tag/1.1.4).
 
 2. Head to your browser's extensions page (see table above).
 

pages/instances.mdx

@@ -4,7 +4,11 @@ title: 'Instances'
 
 # Instances
 
-This page showcases sudo-flix instances hosted by the community and other alternative sites. 
+This page showcases sudo-flix instances hosted by the community. 
 
-- [sudo-flix.lol](https://sudo-flix.lol)
+<Note>
+Instances with a 📦 next to the link have the NSBX API meaning there's more sources and features!
+</Note>
+
+- [sudo-flix.lol](https://sudo-flix.lol) 📦
 - [kanded.xyz](https://flix.kanded.xyz)

theme.config.tsx

@@ -58,7 +58,7 @@ export default defineTheme({
       sidebar: [
         group("Global", [
           link("Instances", "/instances", { icon: 'mdi:web' }),
-          link("Browser extension", "/extension", { icon: 'mdi:plugin' }),
+          link("Browser extension", "/extension", { icon: 'mdi:extension' }),
         ]),
         group("Self-Hosting", [
           link("Start self-hosting", "/self-hosting/hosting-intro"),