feat: update integrations related docs (#6469)

* Update integrations-reference.mdx

* Update publish-to-npm.mdx

---------

Co-authored-by: Sarah Rainsberger <sarah@rainsberger.ca>
Co-authored-by: Paul Valladares <85648028+dreyfus92@users.noreply.github.com>

src/content/docs/en/reference/integrations-reference.mdx

@@ -719,4 +719,5 @@ integrations: [
 
 ## Community Resources
 
-[Build your own Astro Integrations](https://www.freecodecamp.org/news/how-to-use-the-astro-ui-framework/#chapter-8-build-your-own-astro-integrations-1) - by Emmanuel Ohans on FreeCodeCamp
+- [Build your own Astro Integrations](https://www.freecodecamp.org/news/how-to-use-the-astro-ui-framework/#chapter-8-build-your-own-astro-integrations-1) - by Emmanuel Ohans on FreeCodeCamp
+- [Astro Integration Template](https://github.com/florian-lefebvre/astro-integration-template) - by Florian Lefebvre on GitHub

src/content/docs/en/reference/publish-to-npm.mdx

@@ -257,6 +257,10 @@ If you need another file type that isn't natively supported by Astro, add a buil
 
 Share your hard work by adding your integration to our [integrations library](https://astro.build/integrations/)!
 
+:::tip
+Do you need some help building your integration, or just want to meet other integrations builders? We have a dedicated `#dev-integrations` channel on our [Discord server](https://astro.build/chat). Come say hi!
+:::
+
 ### `package.json` data
 
 The library is automatically updated weekly, pulling in every package published to NPM with the `astro-component` or `withastro` keyword.