Update TOC.yml

Author: vikramrajumsft

articles/chaos-studio/TOC.yml

@@ -38,6 +38,8 @@
     href: chaos-studio-faults-actions.md
   - name: Targets and capabilities
     href: chaos-studio-targets-capabilities.md
+  - name: Target selection
+    href: chaos-studio-target-selection.md
   - name: Permissions and security
     href: chaos-studio-permissions-security.md
   - name: Private networking