Commit changed files and submodule updates

ARIA/apg/practices/high-contrast/high-contrast-practice.md

@@ -592,7 +592,7 @@ if (enableSidebar) document.body.classList.add('has-sidebar');
 
         <h3 id="color-scheme-wikipedia">Color Scheme Example: Wikipedia Page</h3>
 
-        <p>The following example illustrates how Wikipedia supports color scheme media query.  The example includes showing the "Appearance" sidebar allowing the user to choose the light or dark scheme and other rendering options for text size and column width.</p>
+        <p>The following example illustrates how Wikipedia supports the color scheme media query.  The example includes showing the "Appearance" sidebar allowing the user to choose the light or dark scheme and other rendering options for text size and column width.</p>
 
         <div class="table-wrap"><table class="data">
           <thead>
@@ -623,7 +623,7 @@ if (enableSidebar) document.body.classList.add('has-sidebar');
 
         <h3>Testing Dark Color Scheme</h3>
 
-        <p>Turn on the dark color them feature for major operating systems and verify text and components color contrast ratios meet at least <a href="https://www.w3.org/WAI/WCAG21/Understanding/contrast-minimum">WCAG 1.4.2: Contrast (Minimum)</a> requirement.</p>
+        <p>Turn on the dark color theme feature in major operating systems and verify text and components satisfy the <a href="https://www.w3.org/WAI/WCAG21/Understanding/contrast-minimum">WCAG 1.4.2: Contrast (Minimum)</a> success criterion.</p>
 
 
       </section>