Activity needs a header to be consistent with other sections

tobiasahlin · tobiasahlin · commit 3eaece2ee37c · 2013-10-30T13:58:16.000+01:00
diff --git a/content/v3/activity.md b/content/v3/activity.md
@@ -1,6 +1,7 @@
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 title: Activity | GitHub API
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+#Activity
 
 Serving up the 'social' in Social Coding™, the Activity APIs provide access to
 notifications, subscriptions, and timelines.
