[v9.x] doc: fix deprecation removed by mistake
In https://github.com/nodejs/node/commit/bae5de1949b8fed3b6f0653e7c1e9d860666e5af, a deprecation (DEP0089) was added to the docs and another one (DEP0098) was removed by mistake. This commit restores it.
Fixes https://github.com/nodejs/node/pull/19428#issuecomment-374002269
Checklist
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make -j4 test
(UNIX), orvcbuild test
(Windows) passes -
documentation is changed or added -
commit message follows commit guidelines