Update django.rst

docs/django.rst

@@ -7,7 +7,7 @@ Using WhiteNoise with Django
 This guide walks you through setting up a Django project with WhiteNoise.
 In most cases it shouldn't take more than a couple of lines of configuration.
 
-I mention Heroku in a few place as that was the initial use case which prompted me
+I mention Heroku in a few places as that was the initial use case which prompted me
 to create WhiteNoise, but there's nothing Heroku-specific about WhiteNoise and the
 instructions below should apply whatever your hosting platform.