[css-viewport] Add clarification that path() contents are zoomed (#10301)

* Add clarification that path() contents are zoomed

* Fix name for path()

Author: chrishtr

css-viewport/Overview.bs

@@ -369,7 +369,7 @@ only the value previously set to it.
 An element becomes zoomed when the 'zoom' property has a positive computed value different than 1
 (or when a flat tree ancestor has zoom).
 
-To apply zoom, the [=used value=] of a CSS property is pre-multiplied
+To apply zoom, the [=used value=] of a CSS property (including values inside of [=path()=] strings) is pre-multiplied
 (before any other steps in the [=used value=] stage)
 by the [=used value=] of 'zoom' for the element.
 It also multiplies the [=natural size=] of all replaced elements,