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

rename file name and update title in file

Author: Rabia2219

…bility-patterns-index/aria-aria-popup.md …cessibility-patterns-index/aria-popup.mddocs/getting-started/accessibility-patterns-index/aria-aria-popup.md renamed to docs/getting-started/accessibility-patterns-index/aria-popup.md docs/getting-started/accessibility-patterns-index/aria-aria-popup.md renamed to docs/getting-started/accessibility-patterns-index/aria-popup.md

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