Change of link to accessibility guide due to uncertain future of vle.…

…jisctechdis server. Accessiblepractice.org is a server I look after and where Alistair and I can keep these guides updated in future.

modules/xerte/parent_templates/Nottingham/models_html5/colourChanger.html

@@ -43,7 +43,7 @@
 		this.init = function() {
 			// get language strings
 			$("#p1").html(x_getLangInfo(x_languageData.find("colourChanger").find("selectTxt")[0], "label", "Please select from the options below") + ":");
-			$("#p2").html(x_getLangInfo(x_languageData.find("colourChanger").find("adviceTxt")[0], "label", "Need more advice? Visit the Jisc TechDis <a target='_blank' href='http://vle.jisctechdis.ac.uk/xerte/play_427'>Xerte Toolkits accessibility guide</a>."));
+			$("#p2").html(x_getLangInfo(x_languageData.find("colourChanger").find("adviceTxt")[0], "label", "Need more advice? Visit the Jisc TechDis <a target='_blank' href='http://accessiblepractice.org/v/xerte/play_427'>Xerte Toolkits accessibility guide</a>."));
 
 			var styles = [];