Update docs to refer new prop

Signed-off-by: Rogerio Angeliski <angeliski@hotmail.com>

plugins/tech-insights/README.md

@@ -38,6 +38,10 @@ const serviceEntityPage = (
         title="Customized title for the scorecard"
         description="Small description about scorecards"
       />
+      <EntityTechInsightsScorecardContent
+        title="Show only simpleTestCheck in this card"
+        checksId={['simpleTestCheck']}
+      />
     </EntityLayout.Route>
     ...
   </EntityLayoutWrapper>
@@ -46,6 +50,8 @@ const serviceEntityPage = (
 
 It is not obligatory to pass title and description props to `EntityTechInsightsScorecardContent`. If those are left out, default values from `defaultCheckResultRenderers` in `CheckResultRenderer` will be taken, hence `Boolean scorecard` and `This card represents an overview of default boolean Backstage checks`.
 
+You can pass an array `checksId` as a prop with the [Fact Retrievers ids](../tech-insights-backend#creating-fact-retrievers) to limit which checks you want to show in this card, If you don't pass, the default value is show all checks.
+
 ## Boolean Scorecard Example
 
 If you follow the [Backend Example](https://github.com/backstage/backstage/tree/master/plugins/tech-insights-backend#backend-example), once the needed facts have been generated the boolean scorecard will look like this: