Fix instance logging

Author: gertjanmaas

modules/runners/lambdas/scale-runners/src/scale-runners/runners.ts

@@ -87,12 +87,7 @@ export async function createRunner(runnerParameters: RunnerInputParameters): Pro
       ],
     })
     .promise();
-  console.info(
-    'Created instance(s): ',
-    runInstancesResponse.Instances?.forEach((i: EC2.Instance) => {
-      i.InstanceId;
-    }),
-  );
+  console.info('Created instance(s): ', runInstancesResponse.Instances?.map((i) => i.InstanceId).join(','));
 
   const ssm = new SSM();
   runInstancesResponse.Instances?.forEach(async (i: EC2.Instance) => {