[css-snappoints] Updated subheading titles

Author: ChumpChief

css-snappoints/Overview.bs

@@ -239,8 +239,8 @@ Definitions {#definitions}
             The act of adjusting the scroll offset of a scroll container's visual viewport such that it is snapped to a snap position is called snapping.
     </dl>
 
-Properties on the scroll container {#properties-on-the-scroll-container}
-========================================================================
+Capturing Scroll Snap Areas:  Properties on the scroll container {#properties-on-the-scroll-container}
+======================================================================================================
 
 <!--
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@@ -252,8 +252,8 @@ Properties on the scroll container {#properties-on-the-scroll-container}
    ██       ██    ██        ████████
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-Scroll Snap Types: the 'scroll-snap-type' property {#scroll-snap-type}
-----------------------------------------------------------------------
+Snapping Rules: the 'scroll-snap-type' property {#scroll-snap-type}
+-------------------------------------------------------------------
 
     <pre class="propdef">
     Name: scroll-snap-type
@@ -310,8 +310,8 @@ Scroll Snap Types: the 'scroll-snap-type' property {#scroll-snap-type}
 ██        ██     ██ ████████  ████████  ████ ██    ██  ██████
 -->
 
-Scroll Snap Padding: the 'scroll-snap-padding' property {#scroll-snap-padding}
-------------------------------------------------------------------------------
+Snapport: the 'scroll-snap-padding' property {#scroll-snap-padding}
+-------------------------------------------------------------------
 
     <pre class="propdef">
     Name: scroll-snap-padding
@@ -351,8 +351,8 @@ Scroll Snap Padding: the 'scroll-snap-padding' property {#scroll-snap-padding}
 
     This property is a <a>shorthand property</a> that sets all of the <a href="#longhands"><css>scroll-snap-padding-*</css> longhands</a> in one declaration.
 
-Properties on the elements {#properties-on-the-elements}
-========================================================
+Aligning Scroll Snap Areas:  Properties on the elements {#properties-on-the-elements}
+=====================================================================================
 
 <!--
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@@ -364,8 +364,8 @@ Properties on the elements {#properties-on-the-elements}
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-Scroll Snap Area: the 'scroll-snap-margin' property {#scroll-snap-margin}
----------------------------------------------------------------------------
+Scroll Snapping Area: the 'scroll-snap-margin' property {#scroll-snap-margin}
+-----------------------------------------------------------------------------
 
     <pre class="propdef">
     Name: scroll-snap-margin
@@ -404,8 +404,8 @@ Scroll Snap Area: the 'scroll-snap-margin' property {#scroll-snap-margin}
 ██     ██ ████████ ████  ██████   ██    ██
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-Scroll Snap Alignment: the 'scroll-snap-align' property {#scroll-snap-align}
-----------------------------------------------------------------------------
+Scroll Snapping Alignment: the 'scroll-snap-align' property {#scroll-snap-align}
+--------------------------------------------------------------------------------
 
     <pre class="propdef">
     Name: scroll-snap-align