You have some kind of documentation linking bugs. Not only this that i found.
I found this (https://jira.appcelerator.org/browse/TIMOB-16043) topic on google search. But i cannot open documentation currently "ios7 migration guide" link see image below
This is not first link that is 404 wich goes to docs
My workaround is:
1. copy part of that non working link
2. paste to google search
3. Open docs page (with error)
4. paste in search "ios7 migration guide"