Update location of Doclava javadocs
Update location of Doclava javadocs

and clean up dead links from cl/390201618

PiperOrigin-RevId: 393828197
Change-Id: I0a248ca71637840cef43f0b23ebaf33f995978c7

AndroidX/androidx,AndroidX/androidx,androidx/androidx,AndroidX/androidx,AndroidX/androidx,AndroidX/androidx,androidx/androidx,androidx/androidx,AndroidX/androidx,androidx/androidx,androidx/androidx,AndroidX/androidx,AndroidX/androidx,androidx/androidx,AndroidX/androidx,AndroidX/androidx,androidx/androidx,androidx/androidx,androidx/androidx,androidx/androidx