doc: fix os.version() Windows API
pRtlGetVersion
is not a thing. This text was likely a result of copying the variable name used in libuv. This commit updates the documentation to reference the correct Windows API call.
Refs: https://github.com/nodejs/node/pull/31732
Checklist
-
make -j4 test
(UNIX), orvcbuild test
(Windows) passes -
documentation is changed or added -
commit message follows commit guidelines