Update toc.yml

Author: NikosMoutzourakis

support/power-platform/power-automate/toc.yml

@@ -130,6 +130,8 @@
       href: desktop-flows/enable-webview-pad-login.md
     - name: Can't access the parent flow
       href: desktop-flows/cannot-access-parent-flow.md
+    - name: Can't establish trust relationship for the SSL/TLS secure channel
+      href: desktop-flows/cannot-establishing-trust-relationship-SSL-TLS.md
     - name: Can't interact with desktop application without an error
       href: desktop-flows/cannot-interact-with-desktop-application.md
     - name: Can't create, edit, save, or view desktop flows