[css-variables] bikeshed fixes

Author: tabatkins

css-variables/Overview.bs

@@ -13,6 +13,7 @@ Editor: Tab Atkins Jr., Google, http://xanthir.com/contact
 Abstract: This module introduces cascading variables as a new primitive value type that is accepted by all CSS properties, and custom properties for defining them.
 Ignored Terms: var-0, var-foo, var-main-color, var-Bar, var-two, var-header-color, var-accent-background, var-foo-bar, var-bar, var-one, var, <ident>, declarations, case-insensitive, getproperty()
 At Risk: the <a interface>CSSVariablesMap</a> interface
+Link Defaults: css-color-3 (property) color, cssom-1 (interface) cssstyledeclaration
 </pre>
 
 <h2 id="intro">