Make toc entries consistent

Author: PatAltimore

articles/blockchain/service/TOC.yml

@@ -7,9 +7,9 @@
 - name: Quickstarts
   expanded: true
   items:
-  - name: Create member - Portal
+  - name: Create member using Portal
     href: create-member.md
-  - name: Create member - CLI
+  - name: Create member using CLI
     href: create-member-cli.md
   - name: Create member using template
     href: create-member-template.md