Fix typo in redirect view docs

docs/ref/class-based-views/base.txt

@@ -208,7 +208,7 @@ RedirectView
 
         urlpatterns = patterns('',
 
-            url(r'r^(?P<pk>\d+)/$', ArticleCounterRedirectView.as_view(), name='article-counter'),
+            url(r'^(?P<pk>\d+)/$', ArticleCounterRedirectView.as_view(), name='article-counter'),
             url(r'^go-to-django/$', RedirectView.as_view(url='http://djangoproject.com'), name='go-to-django'),
         )