Update toc.yml

Pencil-edit in line 404 (accesibility) as reported in the Acrolinx scorecard.

Author: PMEds28

articles/machine-learning/toc.yml

@@ -401,6 +401,6 @@
   - name: What happened to Workbench
     displayName: desktop, ui, Workbench, upgrade, update, transfer
     href: overview-what-happened-to-workbench.md
-  - name: Designer accesibility features
+  - name: Designer accessibility features
     displayName: accessibility, designer, visual interface, screen reader, keyboard shortcuts
     href: designer-accessibility.md