[css-snappoints] Better definition tagging for snapport

Author: ChumpChief

css-snappoints/Overview.bs

@@ -310,7 +310,7 @@ Snapping Rules: the 'scroll-snap-type' property {#scroll-snap-type}
 ██        ██     ██ ████████  ████████  ████ ██    ██  ██████
 -->
 
-Snapport: the 'scroll-snap-padding' property {#scroll-snap-padding}
+Scroll Snapport: the 'scroll-snap-padding' property {#scroll-snap-padding}
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     <pre class="propdef">
@@ -325,7 +325,7 @@ Snapport: the 'scroll-snap-padding' property {#scroll-snap-padding}
     Animatable: as length, percentage, or calc
     </pre>
 
-    The 'scroll-snap-padding' property defines the <a>snapport</a>, a region inset from the scrollport of a <a>scroll container</a> used in calculating its <a>snap positions</a>.  The snapport is used as the alignment container when calculating <a>snap positions</a>.  Values are interpreted as for 'padding', and specify inward offsets from each edge of the scrollport.
+    The 'scroll-snap-padding' property defines the <dfn local-lt="snapport">scroll snapport</dfn>, a region inset from the scrollport of a <a>scroll container</a> used in calculating its <a>snap positions</a>.  The snapport is used as the alignment container when calculating <a>snap positions</a>.  Values are interpreted as for 'padding', and specify inward offsets from each edge of the scrollport.
 
     <div class="example">
         In this example, scroll-snap-padding is used to center slideshow images within the portion of the viewport that is not obscured by a fixed-position toolbar.