[v8.x backport] doc: Backport #19685 and #19949 to v8.x
This backports two documentation changes.
#19685 is a straightforward one and landed cleanly.
#19949 required minor manual formatting adjustments, mostly because it incorporated some unrelated styling fixes for some reason.
Main change is the documentation of Buffer.from(Uint8Array)
— that behavior is explicitly there since beca3244 (but it also worked before that).
Checklist
-
make -j4 test
(UNIX), orvcbuild test
(Windows) passes -
documentation is changed or added