进度修复

release/UNIVERSAL_SpineThumbnailGenerateServer/progress.html

@@ -45,7 +45,7 @@
 		(function () {
 			try {
 				const pathname = decodeURIComponent(new URL('.', location.href).pathname).replace(/\\/g, '/');
-				window.SpinePluginRoot = pathname.replace(/^\/([A-Za-z]:)/, '$1');
+				window.SpinePluginRoot = pathname.replace(/^\/+([A-Za-z]:)/, '$1');
 			} catch (error) {
 				window.SpinePluginRoot = '';
 			}