update docs to points to shoutrrr 0.7 instead

Signed-off-by: Daniel Holbach <daniel@weave.works>

content/en/docs/configuration.md

@@ -219,15 +219,15 @@ Here is the syntax:
 
   For the new slack App integration, use:\
     `slack://xoxb:123456789012-1234567890123-4mt0t4l1YL3g1T5L4cK70k3N@<CHANNEL_NAME>?botname=<BOTNAME>`\
-    for more information, [look here](https://containrrr.dev/shoutrrr/v0.5/services/slack/#examples)
+    for more information, [look here](https://containrrr.dev/shoutrrr/v0.7/services/slack/#examples)
 
 - rocketchat:      `rocketchat://[username@]rocketchat-host/token[/channel|@recipient]`
 
 - teams:           `teams://group@tenant/altId/groupOwner?host=organization.webhook.office.com`
 
 - Email:           `smtp://username:password@host:port/?fromAddress=fromAddress&toAddresses=recipient1[,recipient2,...]`
 
-More details here: [containrrr.dev/shoutrrr/v0.5/services/overview](https://containrrr.dev/shoutrrr/v0.5/services/overview)
+More details here: [containrrr.dev/shoutrrr/v0.7/services/overview](https://containrrr.dev/shoutrrr/v0.7/services/overview)
 
 ## Overriding Lock Configuration