Update icons.html
Update icons.html

Fix name of is-active/isActive attribute to match API documentation.
ionic-team/ionic-site,ionic-team/ionic-site,driftyco/ionic-site,driftyco/ionic-site,ionic-team/ionic-site,driftyco/ionic-site,driftyco/ionic-site,ionic-team/ionic-site,driftyco/ionic-site