Merge pull request #289 from LibraryCarpentry/morskyjezek-patch-ep04

minor text modification for code display. Approving without further review since this is a minor change.

Author: morskyjezek

episodes/04-loops.md

@@ -140,6 +140,7 @@ Alternatively, rather than running the loop above on the command line, you can s
 #!/bin/bash
 # This script loops through .txt files, returns the file name,
 # first line, and last line of the file
+
 for file in *.txt
 do
 	echo "$file"