Fix missing SMS articles

Hide Postman for SMS article and restore TOC entries for SMS 10DLC guidelines and applying

Author: vac0224

articles/communication-services/toc.yml

@@ -296,6 +296,8 @@ items:
     href: concepts/sms/messaging-policy.md
   - name: Short code program brief filling guidelines
     href: concepts/sms/program-brief-guidelines.md
+  - name: Ten digit long code (10DLC) registration guidelines
+    href: concepts/sms/ten-digit-long-code-guidelines.md
   - name: Opt-Out management overview
     href: concepts/sms/opt-out-api-concept.md
   - name: Events
@@ -332,10 +334,12 @@ items:
       href: quickstarts/sms/handle-sms-events.md
     - name: Apply for a short code
       href: quickstarts/sms/apply-for-short-code.md
-    - name: Use Postman to send SMS messages
-      href: tutorials/postman-tutorial.md
+#    - name: Use Postman to send SMS messages
+#      href: tutorials/postman-tutorial.md
     - name: Send short URL
       href: tutorials/sms-url-shortener.md
+    - name: Apply for 10 digit long code (10DLC) registration
+      href: quickstarts/sms/apply-for-ten-digit-long-code.md
     - name: Apply for toll-free verification
       href: quickstarts/sms/apply-for-toll-free-verification.md
     - name: Enable alphanumeric sender ID