dns: fix trace_events name for resolveCaa()

A test was added for this in 6f344981 but because it was a test in the
`internet` directory, it was not run on CI and it was not noticed that
the test was failing. This fixes the error that was causing the test to
fail.

PR-URL: https://github.com/nodejs/node/pull/35979


Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>