update automation lesson for debugging

[mistrm82]

look for intermediate bams, look at the job.out files, and also discuss sacct to see how jobs are doing

maybe add and SBATCH directive to get an err file?

[rkhetani]

Create a troubleshooting section at the end:

• Look at err files if job is running
• If jobs are pending, look at err and out files in /n/groups/hbctraining/

Create abovementioned err and out files.