website/deverlop-docs website/integrations: add links to integrations template (#8995)

* add link to template

* add link in devdocs too

* fix links and tweaks

* extra files

---------

Co-authored-by: Tana M Berry <tana@goauthentik.com>

website/integrations/services/index.mdx

@@ -6,20 +6,25 @@ slug: /
 import DocCardList from "@theme/DocCardList";
 import { useCurrentSidebarCategory } from "@docusaurus/theme-common";
 
-Below is a list of all applications that are known to work with authentik.
+Below is a list of all integrations, or applications that are known to work with authentik. All integrations will have one of these badges:
 
-All integrations will have a combination of these badges:
+-   <span class="badge badge--secondary">Support level: Community</span> The integration
+    is community maintained.
 
--   <span class="badge badge--secondary">Support level: Community</span>
+-   <span class="badge badge--info">Support level: Vendor</span> The integration
+    is supported by the vendor.
 
-    The integration is community maintained.
+-   <span class="badge badge--primary">Support level: authentik</span> The integration
+    is regularly tested by the authentik team.
 
--   <span class="badge badge--info">Support level: Vendor</span>
+### Add a new integration
 
-    The integration is supported by the vendor.
+To add documentation for a new integration (with support level Community or Vendor), please use the integration template [`service.md`](https://github.com/goauthentik/authentik/blob/main/website/integrations/_template/service.md) file from our GitHub repo. You can download the template file using the following command:
 
--   <span class="badge badge--primary">Support level: authentik</span>
+```
+wget https://raw.githubusercontent.com/goauthentik/authentik/main/website/integrations/_template/service.md
+```
 
-    The integration is regularly tested by the authentik team.
+## Integration categories
 
 <DocCardList items={useCurrentSidebarCategory().items} />