Fix broken links in README

- Remove `www` subdomain as it's no longer needed
- Add `.html` suffixes to broken links

README.md

@@ -10,14 +10,14 @@ Metabase is the easy, open source way for everyone in your company to ask questi
 [![NPM Dependencies Status](https://david-dm.org/metabase/metabase.svg)](https://david-dm.org/metabase/metabase)
 
 # Features
-- 5 minute [setup](http://www.metabase.com/docs/latest/setting-up-metabase) (We're not kidding)
-- Let anyone on your team [ask questions](http://www.metabase.com/docs/latest/users-guide/04-asking-questions) without knowing SQL
-- Rich beautiful [dashboards](http://www.metabase.com/docs/latest/users-guide/06-sharing-answers) with auto refresh and fullscreen
+- 5 minute [setup](http://metabase.com/docs/latest/setting-up-metabase.html) (We're not kidding)
+- Let anyone on your team [ask questions](http://metabase.com/docs/latest/users-guide/04-asking-questions.html) without knowing SQL
+- Rich beautiful [dashboards](http://metabase.com/docs/latest/users-guide/06-sharing-answers.html) with auto refresh and fullscreen
 - SQL Mode for analysts and data pros
-- Create canonical [segments and metrics](http://www.metabase.com/docs/latest/administration-guide/07-segments-and-metrics) for your team to use
-- Send data to Slack or email on a schedule with [Pulses](http://www.metabase.com/docs/latest/users-guide/10-pulses)
-- View data in Slack anytime with [MetaBot](http://www.metabase.com/docs/latest/users-guide/11-metabot)
-- [Humanize data](http://www.metabase.com/docs/latest/administration-guide/03-metadata-editing) for your team by renaming, annotating and hiding fields
+- Create canonical [segments and metrics](http://metabase.com/docs/latest/administration-guide/07-segments-and-metrics.html) for your team to use
+- Send data to Slack or email on a schedule with [Pulses](http://metabase.com/docs/latest/users-guide/10-pulses.html)
+- View data in Slack anytime with [MetaBot](http://metabase.com/docs/latest/users-guide/11-metabot.html)
+- [Humanize data](http://metabase.com/docs/latest/administration-guide/03-metadata-editing.html) for your team by renaming, annotating and hiding fields
 
 For more information check out [metabase.com](http://www.metabase.com)