Update iridis.md

howTo/iridis.md

@@ -39,7 +39,7 @@ To do this:
 
 ## Now what?
 
-You can interactively run R scripts by running R. Or you can run them non-interactively using the Rscript <yourScript.R> command. But you probably shouldn't. 
+You can interactively run R scripts by running R. Or you can run them non-interactively using the `Rscript <yourScript.R>` command. But you probably shouldn't. 
 
 You should submit your commands (e.g. `Rscript myScript.R`) to the Iridis scheduling system so it can balance everyone's needs. You need to [learn how to do this](https://hpc.soton.ac.uk/redmine/projects/iridis-4-support/wiki/Job_submission)...