Fix formatting by removing blank line

Removed extra blank line in gnome_sort.py

Author: frecklysledge0

sorts/gnome_sort.py

@@ -9,7 +9,6 @@
 python3 -m doctest -v gnome_sort.py
 
 For manual testing run:
-
 python3 gnome_sort.py
 Gnome Sort Algorithm implementation in Python.