doc: change logical to bitwise OR in dns lookup

The `hints` value will be a number. To specify more than one hints,
their corresponding bits have to be set. So bitwise OR should be used
instead of logical OR.

PR-URL: nodejs#11037

Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Timothy Gu <timothygu99@gmail.com>
Reviewed-By: Sam Roberts <vieuxtech@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

doc/api/dns.md

@@ -77,7 +77,7 @@ Alternatively, `options` can be an object containing these properties:
   `4` or `6`. If not provided, both IP v4 and v6 addresses are accepted.
 * `hints`: {Number} - If present, it should be one or more of the supported
   `getaddrinfo` flags. If `hints` is not provided, then no flags are passed to
-  `getaddrinfo`. Multiple flags can be passed through `hints` by logically
+  `getaddrinfo`. Multiple flags can be passed through `hints` by bitwise
   `OR`ing their values.
   See [supported `getaddrinfo` flags][] for more information on supported
   flags.