doc: fix typo in n-api.md
I just replaced than
with that
as suggested in https://github.com/nodejs/node/issues/21049.
- wrong: the N-API functions than can be used to change
- correct: the N-API functions that can be used to change
Fixes: https://github.com/nodejs/node/issues/21049
Checklist
-
make -j4 test
(UNIX), orvcbuild test
(Windows) passes - tests and/or benchmarks are included (I think it's not necessary for just a typo)
-
documentation is changed or added -
commit message follows commit guidelines