docs: Update documentation to mention that HTTP and HTTPS are supported
docs: Update documentation to mention that HTTP and HTTPS are supported

Optional TLS certificates have been supported for a little while.

Signed-off-by: Philip Withnall <29c2a2ac2a854b9cf047275aa9de346d096be2e0@endlessm.com>

pwithnall/uhttpmock,pwithnall/uhttpmock