docs(service-resolver): clarify the default time unit in service-resolver.ConnectTimeout (#16149)

* doc: clarify the default time unit in service-resolver.ConnectTimeout

* Update website/content/docs/connect/config-entries/service-resolver.mdx

Co-authored-by: trujillo-adam <47586768+trujillo-adam@users.noreply.github.com>

---------

Co-authored-by: trujillo-adam <47586768+trujillo-adam@users.noreply.github.com>

website/content/docs/connect/config-entries/service-resolver.mdx

@@ -438,7 +438,7 @@ spec:
       name: 'ConnectTimeout',
       type: 'duration: 0s',
       description:
-        'The timeout for establishing new network connections to this service.',
+        'The timeout for establishing new network connections to this service. The default unit of time is `ns`.',
     },
     {
       name: 'DefaultSubset',