Update Wall of Browser Bugs entry for #14972

http://crbug.com/175502 is fixed in Chrome 40 and has been closed.
But Windows is still broken due to http://crbug.com/438064 ,
  which is open and currently targeting Chrome 41.

docs/_data/browser-bugs.yml

@@ -182,10 +182,11 @@
 
 -
   browser: >
-    Chrome (Windows & Linux)
+    Chrome (Windows)
   summary: >
     Body content can be scrolled even though `overflow: hidden;` is applied to it.
   upstream_bug: >
-    Chromium#175502
+    Chromium#438064
   origin: >
+    Chromium#175502,
     Bootstrap#14972