Replace UNIX_HPC_exercise_instructions.md

exercises/UNIX_HPC_exercise_instructions.md

@@ -464,7 +464,7 @@ source $HOME/.bashrc
    * The input fasta file is the multi-fasta file you generated in the previous exercise. 
    * Submit the job. 
    * Watch the state of the job using `squeue`. 
-   * Explore the outplut files `[jobname].out` and `[jobname].err`
+   * Explore the output files of the job `[jobname].out` and `[jobname].err` as well as the actual MSA. 
 
 <details><summary><b>Exercise solution</b></summary> 
 <p>