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

rename file name and update title in file

Author: Rabia2219

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

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