docs: add Netlify badge to home page (all-contributors#927)

docs: add netlify badge for open source plan

Author: lwasser

src/content/docs/index.mdx

@@ -141,4 +141,8 @@ so you can focus on your project instead of managing your ReadMe.
   <LinkButton href="/bot/installation/" icon="information" iconPlacement="start">Install the Bot</LinkButton>
   <LinkButton href="/overview/" variant="secondary" icon="open-book" iconPlacement="start"> Read the Docs</LinkButton>
   </div>
+  <img src="https://www.netlify.com/assets/badges/netlify-badge-color-accent.svg" alt="Deploys by Netlify" />
+
 </div>
+
+