doc: remove incorrect mention of module in typescript.md

Node.js/Armaro has never supported `module`-keyword namespaces. Even
with `transform-types` on.

This removes the incorrect mention.

PR-URL: #61839
Reviewed-By: René <contact.9a5d6388@renegade334.me.uk>
Reviewed-By: Marco Ippolito <marcoippolito54@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Jacob Smith <jacob@frende.me>

Author: robpalme

doc/api/typescript.md

@@ -138,11 +138,10 @@ The most prominent features that require transformation are:
 
 * `Enum` declarations
 * `namespace` with runtime code
-* legacy `module` with runtime code
 * parameter properties
 * import aliases
 
-`namespaces` and `module` that do not contain runtime code are supported.
+`namespace`s that do not contain runtime code are supported.
 This example will work correctly:
 
 ```ts