[CSS22] Use 2016 versions of TR style sheets.

Author: bert-github

css2/Project.cfg

@@ -15,7 +15,7 @@
 @source-extension .src
 
 @stylesheet style/default.css text/css
-@stylesheet https://www.w3.org/StyleSheets/TR/W3C-_THE_STYLE_.css text/css
+@stylesheet https://www.w3.org/StyleSheets/TR/2016/W3C-_THE_STYLE_.css text/css
 @contents "cover.html#minitoc"
 
 # Additional links. If for navbar, then add a 3rd column