Fixed the syntax to interpolate the variable in the message string.

Author: jcatera-splunk

.github/workflows/heretto-reminder.yml

@@ -24,5 +24,5 @@ jobs:
               owner: context.repo.owner,
               repo: context.repo.repo,
               issue_number: context.payload.pull_request.number,
-              body: `@${owner}, please make sure that you update the files in Heretto and post the Heretto share link in this PR.`
+              body: `@${context.repo.owner}, please make sure that you update the files in Heretto and post the Heretto share link in this PR.`
             })