Correct fact name.

collectd/collectd_facts

@@ -9,4 +9,4 @@ fail ()
 
 which collectd || fail "Can't find collectd executable."
 
-collectd -h | sed -n 's/[a-zA-Z]*\([0-9]*\)\.\([0-9]*\)\.\([0-9]*\).*/{"changed": false, "ansible_facts": {"nginx": {"major":\1, "minor":\2, "patch":\3}}}/p'
+collectd -h | sed -n 's/[a-zA-Z]*\([0-9]*\)\.\([0-9]*\)\.\([0-9]*\).*/{"changed": false, "ansible_facts": {"collected": {"major":\1, "minor":\2, "patch":\3}}}/p'