grid and table properties practice: Fix misplaced greater than symbol in code sample (pull #3194)

In two code snippets, there were '>' symbols for closing tags that were out of place.

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Co-authored-by: Adam Page <[email protected]>

Author: maeldebon

content/practices/grid-and-table-properties/grid-and-table-properties-practice.html

@@ -115,8 +115,7 @@ <h2>Using <code>aria-rowcount</code> and <code>aria-rowindex</code></h2>
   aria-rowcount tells assistive technologies the actual size of the grid
   is 463 rows even though only 4 rows are present in the markup.
 --&gt;
-&lt;table role=&quot;grid&quot; aria-rowcount=&quot;463&quot;&gt;
-  aria-label=&quot;Student roster for history 101&quot;
+&lt;table role=&quot;grid&quot; aria-rowcount=&quot;463&quot; aria-label=&quot;Student roster for history 101&quot;&gt;
   &lt;thead&gt;
     &lt;tr aria-rowindex=&quot;1&quot;&gt;
       &lt;th&gt;Last Name&lt;/th&gt;
@@ -237,8 +236,8 @@ <h3>Using <code>aria-colindex</code> When Column Indices Are Not Contiguous</h3>
             In this example, the first two columns with the student name are shown, but the score columns have been scrolled to show columns 10 through 13.
             Columns 3 through 9 are not visible so are not in the DOM.
           </p>
-          <pre><code>&lt;table role=&quot;grid&quot; aria-rowcount=&quot;463&quot; aria-colcount=&quot;13&quot;&gt;
-  aria-label=&quot;Student grades for history 101&quot;
+          <pre><code>&lt;table role=&quot;grid&quot; aria-rowcount=&quot;463&quot; aria-colcount=&quot;13&quot;
+  aria-label=&quot;Student grades for history 101&quot;&gt;
   &lt;!--
     aria-rowcount and aria-colcount tell assistive technologies
     the actual size of the grid is 463 rows by 13 columns,