doc: clarify entry point behavior when using loader hooks

Fixes: #41275

PR-URL: #41304
Reviewed-By: Guy Bedford <guybedford@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>

doc/api/esm.md

@@ -623,8 +623,8 @@ node b.mjs # works
 To customize the default module resolution, loader hooks can optionally be
 provided via a `--experimental-loader ./loader-name.mjs` argument to Node.js.
 
-When hooks are used they only apply to ES module loading and not to any
-CommonJS modules loaded.
+When hooks are used they apply to the entry point and all `import` calls. They
+won't apply to `require` calls; those still follow [CommonJS][] rules.
 
 ### Hooks