update toc

Author: mumian

articles/azure-resource-manager/bicep/toc.yml

@@ -677,6 +677,8 @@
       href: diagnostics/bcp129.md
     - name: BCP132
       href: diagnostics/bcp132.md
+    - name: BCP135
+      href: diagnostics/bcp135.md
     - name: BCP139
       href: diagnostics/bcp139.md
     - name: BCP147