Update docs/configuration.md

Signed-off-by: Ben Kochie <[email protected]>

Author: SuperQ

docs/configuration.md

@@ -1439,6 +1439,7 @@ fields:
 
 # The HTTP client's configuration.
 [ http_config: <http_config> | default = global.http_config ]
+
 # The maximum time to wait for a slack request to complete, before failing the
 # request and allowing it to be retried. The default value of 0s indicates that
 # no timeout should be applied.