Update and rename aria-aria.md to aria.md

rename file name and update title in file

Author: Rabia2219

…ccessibility-patterns-index/aria-aria.md …ted/accessibility-patterns-index/aria.mddocs/getting-started/accessibility-patterns-index/aria-aria.md renamed to docs/getting-started/accessibility-patterns-index/aria.md docs/getting-started/accessibility-patterns-index/aria-aria.md renamed to docs/getting-started/accessibility-patterns-index/aria.md

@@ -1,4 +1,4 @@
-# ARIA - ARIA
+# ARIA
 - WAVE Category: ARIA
 - WAVE ARIA: ARIA