[scroll-animations-1] Clarify that animation-range is reset by animat…

…ion. #8054

scroll-animations-1/Overview.bs

@@ -903,7 +903,8 @@ spec: cssom-view-1; type: dfn;
  A set of animation keyframes can be attached
  in reference to [=named timeline ranges=]
  by restricting the animation’s [=active interval=]
- to the specified timeline range.
+ to a specified timeline range
+ with the 'animation-range' properties.
  Delays (see 'animation-delay')
  are set within this restricted range,
  constricting it further.
@@ -919,6 +920,9 @@ spec: cssom-view-1; type: dfn;
  ╶┄┄┄┄┄ duration┄┄┄┄┄╴
  </pre>
 
+ The 'animation-range' properties
+ are [=reset-only sub-properties=] of the 'animation' [=shorthand=].
+
  ISSUE: Define application to time-driven animations.
 
 ### Specifying an Animation’s Timeline Range: the 'animation-range' shorthand ### {#animation-range}