Add to TOC

Author: maud-lv

articles/partner-solutions/toc.yml

@@ -30,3 +30,5 @@ items:
     href: ./astronomer/index.yml
   - name: Informatica Intelligent Data Management Cloud (Preview) - Azure Native ISV Service
     href: ./informatica/index.yml
+  - name: Split Experimentation
+    href: ./split-experimentation/index.yml