Is there a location for suggesting documentation updates?

I am looking at this page related to Start-Item, https://docs.umbraco.com/umbraco-cms/reference/content-delivery-api

I would have expected that Start-Item would have worked with any item key. However, in looking at the code, it appears that the start item must be a root node.

_requestedStartContent = Guid.TryParse(headerValue, out Guid key)
    ? rootContent.FirstOrDefault(c => c.Key == key)
    : rootContent.FirstOrDefault(c => c.UrlSegment(_variationContextAccessor).InvariantEquals(headerValue));

This impacts on how someone might structure a site and would be valuable to know in advance.