docs: sync from docs/ @ b60efff2d91871e09db48b894415668d1b777825
docs: sync from docs/ @ cd91c8604cbf2ae4661c0e370e387ce07446fd41
docs: sync from docs/ @ d778151ff7d94ea97610c11da68cfa639012a74b
docs: sync from docs/ @ 2a23218456eb9246f49d9f2644cf34c3437e74ce
Wiki body cross-doc links as page links (resolve on flat wiki)
Sync wiki from docs/: editions (universal-full/lite, per-abi), 21 languages, per-page switcher