website/integrations: fix webfinger link in tailscale doc (#14942)

* Update index.md

Modify the link in webfinger

Signed-off-by: Bisn <b@bisn.cn>

* Update website/integrations/services/tailscale/index.md

Co-authored-by: Dominic R <dominic@sdko.org>
Signed-off-by: Dewi Roberts <dewi@goauthentik.io>

---------

Signed-off-by: Bisn <b@bisn.cn>
Signed-off-by: Dewi Roberts <dewi@goauthentik.io>
Co-authored-by: Dewi Roberts <dewi@goauthentik.io>
Co-authored-by: Dominic R <dominic@sdko.org>

website/integrations/services/tailscale/index.md

@@ -25,7 +25,7 @@ Use this JSON template for your WebFinger response:
 {
     "links": [
         {
-            "href": "https://authentik.company",
+            "href": "https://authentik.company/application/o/<application_slug>/",
             "rel": "http://openid.net/specs/connect/1.0/issuer"
         }
     ],