Update Apprise documentation with official link

Updated Apprise documentation to include a link to official documentation and removed placeholder text.

Author: bakerboy448

docs/pages/integrations/apprise.md

@@ -1,3 +1,5 @@
 # Apprise
 
-COMING SOON :smile:
+Please see [Apprise's Documentation at aprriseit.com](https://appriseit.com/services/notifiarr/).
+
+Notifiarr Documentation coming soon