grammar fix

Co-authored-by: Nora <72460825+noraleonte@users.noreply.github.com>
Signed-off-by: Danilo Leal <67129314+danilo-leal@users.noreply.github.com>

docs/data/date-pickers/accessibility/accessibility.md

@@ -7,7 +7,7 @@ packageName: '@mui/x-date-pickers'
 
 # Accessibility
 
-<p class="description">Learn how the Date and Time Pickers implements accessibility features and guidelines, including keyboard navigation that follows international standards.</p>
+<p class="description">Learn how the Date and Time Pickers implement accessibility features and guidelines, including keyboard navigation that follows international standards.</p>
 
 ## Guidelines