Update README to specify job summary link

Author: koppor

README.md

@@ -29,7 +29,8 @@ jobs:
 
 ### Output
 
-The action generates a consistency check report as a Markdown table. This is automatically added to the Job Summary of your workflow run.
+The action generates a consistency check report as a Markdown table.
+This is automatically added to the [Job summary](https://docs.github.com/en/actions/reference/workflows-and-actions/workflow-commands#example-of-adding-a-job-summary) of your workflow run.
 
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