fix comment

Author: medyagh

.github/workflows/functional_test.yml

@@ -10,7 +10,7 @@ on:
       - "go.mod"
       - "**.go"
       - "Makefile"
-# Limit one unit test job running per PR/Branch
+# Limit one functional test job running per PR/Branch
 concurrency:
   group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
   # For example, if you push multiple commits to a pull request in quick succession, only the latest workflow run will continue