Adding 1.16 release notes to TOC

Author: VesaJuvonen

docs/toc.yml

@@ -458,8 +458,10 @@
     items:
     - name: Overview
       href: spfx/roadmap.md
+    - name: SPFx v1.16 - August 30, 2022
+      href: spfx/release-1.16.md      
     - name: SPFx v1.15.2 - August 2, 2022
-      href: spfx/release-1.15.2.md      
+      href: spfx/release-1.15.2.md
     - name: SPFx v1.15 - June 21, 2022
       href: spfx/release-1.15.md      
     - name: SPFx v1.14 - February 17, 2022