ref: move section about icons

Signed-off-by: Diana Janickova <djanicko@redhat.com>

Author: djanickova

workspaces/scorecard/plugins/scorecard-backend-module-filecheck/README.md

@@ -98,8 +98,6 @@ Each configured file produces one boolean metric.
 
 All configured file checks share the same default thresholds. Default thresholds for `filecheck` (applies to every `filecheck.<id>` metric):
 
-Custom threshold keys other than `success`, `warning`, or `error` must include `color` and `icon` in app-config.
-
 ```yaml
 # app-config.yaml
 scorecard:
@@ -117,6 +115,8 @@ scorecard:
             color: 'error.main'
 ```
 
+Custom threshold keys other than `success`, `warning`, or `error` must include `color` and `icon` in app-config.
+
 See [threshold configuration](../scorecard-backend/docs/thresholds.md) for custom configuration.
 
 ## Schedule Configuration