add WCAG HTML Techniques to main index.html
add WCAG HTML Techniques to main index.html

githubdam/Va11yS,cambeaudoin/Va11yS,IBMa/Va11yS,cambeaudoin/Va11yS,IBMa/ta11y,IBMa/Va11yS,githubdam/Va11yS,githubdam/Va11yS,IBMa/ta11y