fix spelling errors

aria-practices.html

@@ -7049,7 +7049,7 @@ <h3>Changes in July 2019 Publication of APG 1.1 Release 4</h3>
         <li>Minor revisions of guidance or implementation were made to the following design patterns and examples:
           <ul>
             <li>Editor Menubar Example: Updated example so that meta data used by the scripts is specified using <code>data-</code> attributes instead of with <code>rel</code> attributes.</li>
-            <li>Radio Group with Active Descendant Example: Removed unused keycodes and fixed linting issues.</li>
+            <li>Radio Group with Active Descendant Example: Removed unused key codes and fixed linting issues.</li>
           </ul>
         </li>
       </ul>
@@ -7086,7 +7086,7 @@ <h3>Changes in January 2019 Publication of APG 1.1 Release 3</h3>
             <li>Dialog Examples: Fixed IE11 incompatibility in role validity check.</li>
             <li>Single-select listbox example: Fix a bug with aria-selected.</li>
             <li>Grid Examples: Fixed how event listeners were cleaned up.</li>
-            <li>Menubar Examples: Applied role="none" where missing from elements in menubar and changed visual design to better distinguish between menuitemradio and meuitemcheckbox elements.</li>
+            <li>Menubar Examples: Applied role="none" where missing from elements in menubar and changed visual design to better distinguish between menuitemradio and menuitemcheckbox elements.</li>
             <li>Radio Group Example: Fixed documentation of elements used in attributes table.</li>
             <li>Spin Button Pattern: Added aria-invalid guidance for values outside allowed range.</li>
             <li>Toolbar Pattern: Clarified keyboard guidance for Tab and Shift+Tab and revised description to remove guidance that conflicted with updated radio group pattern.</li>