Merge pull request #262055 from v-luckywang/1227-Update_adf_salesforces_v2

[New feature] - Update Salesforce v2 connector doc in ADF

Author: PMEds28

articles/data-factory/TOC.yml

@@ -557,7 +557,11 @@ items:
       href: connector-rest.md
       displayName: timeout
     - name: Salesforce
-      href: connector-salesforce.md
+      items:
+      - name: Salesforce
+        href: connector-salesforce.md
+      - name: Salesforce (legacy)
+        href: connector-salesforce-legacy.md
     - name: Salesforce Service Cloud
       href: connector-salesforce-service-cloud.md
     - name: Salesforce Marketing Cloud