Replaces all headers of the style "# title #label" with "# title #sec-label" and all "\@ref(label)" with "@sec-label" and all "](#label)" with "](#sec-label)".
Replaces all headers of the style "# title #label" with "# title #sec-label" and all "\@ref(label)" with "@sec-label" and all "](#label)" with "](#sec-label)".