Name and Description Guidance Section: fix capitalization typo (pull #…

…1292)

Co-authored-by: Matt King <a11yThinker@Gmail.com>

aria-practices.html

@@ -3786,7 +3786,7 @@ <h3>What ARE Accessible Names and Descriptions?</h3>
         Authors supply a description when there is a need to associate additional information with an element, such as instructions or format requirements for an input field.
       </p>
       <p>
-        assistive technologies present names differently from descriptions.
+        Assistive technologies present names differently from descriptions.
         For instance, screen readers typically announce the name and role of an element first, e.g., a button named <q>Mute Conversation</q>could be spoken as <q>Mute Conversation button</q>.
         If an element has a state, it could be announced either before or after the name and role; after name and role is the typical default.
          For example, a switch button named <q>Mute Conversation</q> in the <q>off</q> state could be announced as <q>Mute Conversation switch button off</q>.