The sitemap is automatically created, and google regularly visits openwrt.org.
A big bunch of changes has been done only yesterday.
Please give google some time to reindex openwrt.org.
other guides are using namespaces/links with guide-developer and guide-quickstart, so the change was intentional.
Since I was causing massive (temporary) breakage in Google searching anyway with the re-arranging of all articles with the merge of the wikis, I figured that I could also have a consistent naming too.
I don't plan to make another sweeping change like this in the future, maybe some pages might be moved around, but not nearly half the wiki as it happened last weekend.