Update linux shell script to only apply to files (not directories ending in .mkv and to be case insensitive.

Create-a-Folder-for-Each-Movie.md

@@ -30,10 +30,9 @@ I used a program called [Files 2 Folder](http://www.dcmembers.com/skwire/downloa
 5. Each movie will be in its' own folder. ![](https://i.imgur.com/iawRm8o.jpg)
 
 # Linux
-
 ```sh
 cd /path/to/your/movies/files/
-find . -maxdepth 1 -name "*.mkv" -exec sh -c 'mkdir "${1%.*}" ; mv "${1%}" "${1%.*}" ' _ {} \;
+find . -maxdepth 1 -type f -iname "*.mkv" -exec sh -c 'mkdir "${1%.*}" ; mv "${1%}" "${1%.*}" ' _ {} \;
 ```
 
 # Windows & Linux