Fix broken link in 1.0.0 release note

`[emberjs.com](emberjs.com)` links `/blog/2013/08/31/emberjs.com`.
But this page is not found.
Merge pull request #708 from trek/update-getting-started-guide-to-one-dot-oh

Update GSG for Ember 1.0
Fix typo
Merge pull request #719 from elumalai/patch-1

Fix typo
Merge pull request #718 from tricknotes/fix-broken-link

Fix broken link in 1.0.0 release note
Update dependencies to 1.0!