fix font format

src/themes/default/elements/icon.variables

@@ -36,8 +36,8 @@
 @fallbackSRC: url("@{fontPath}/@{fontName}.eot");
 @src:
   url("@{fontPath}/@{fontName}.eot?#iefix") format('embedded-opentype'),
-  url("@{fontPath}/@{fontName}.woff2") format('woff'),
+  url("@{fontPath}/@{fontName}.woff2") format('woff2'),
   url("@{fontPath}/@{fontName}.woff") format('woff'),
   url("@{fontPath}/@{fontName}.ttf") format('truetype'),
   url("@{fontPath}/@{fontName}.svg#icons") format('svg')
-;
+;