Documentation on not using links as href url

[anna]

Continuing the discussion from Links in HTML version of email are not converting into tracking links:

@duncanc

<a href="http://www.seek.com.au/job/29155849">http://www.seek.com.au/job/29155849</a>

Links such as these where the link text includes a url are not tracked. If they were tracked then the href url (which would be going to phplist) would be different to the url in the link text.
Many email clients will treat these as phishing and raise a warning, as Thunderbird does

The simplest way around this is to remove the http:// or https:// from the link text. To most people it will still look to be a link to a web page, and won’t fail the phplist filtering.

We should add this into the docs I think. Which chapter(s) do you think is best?