eprefix: black cleanup

Signed-off-by: Brian Dolbec <brian.dolbec@gmail.com>
Part-of: #60
Closes: #60
Signed-off-by: Sam James <sam@gentoo.org>

Author: dol-sen

pym/gentoolkit/eprefix.py

@@ -9,9 +9,10 @@
 
 Example useage:  from gentoolkit.eprefix import EPREFIX
 then in code add it to the filepath eg.:
-	exclude_file = "%s/etc/%s/%s.exclude" % (EPREFIX,__productname__ , action)
+        exclude_file = "%s/etc/%s/%s.exclude" % (EPREFIX,__productname__ , action)
 
 """
+
 # Load EPREFIX from Portage, fall back to the empty string if it fails
 try:
     from portage.const import EPREFIX