fore scheduler shall use the correct builder

templates/buildbot/master.cfg.j2

@@ -121,7 +121,7 @@ c['schedulers'].append(schedulers.SingleBranchScheduler(
 {% if  builder.force_scheduler | default(false) %}
 c['schedulers'].append(schedulers.ForceScheduler(
   name="force-{{builder_name}}",
-  builderNames=["hello-world"],
+  builderNames=["{{builder_name}}"],
 ))
 {% endif %}