Update mkdocs.yml

mkdocs.yml

@@ -284,7 +284,7 @@ nav:
         - Meta Service: 1.introduction/3.nebula-graph-architecture/2.meta-service.md
         - Graph Service: 1.introduction/3.nebula-graph-architecture/3.graph-service.md
         - Storage Service:  1.introduction/3.nebula-graph-architecture/4.storage-service.md
-
+  # nav.ent.begin
   - About Vesoft licenses: 
     - License overview: 9.about-license/1.license-overview.md
     - License management suites: 
@@ -294,7 +294,7 @@ nav:
     - Purchase licenses: 9.about-license/3.purchase-license.md
     - Generate and load a license key: 9.about-license/4.generate-and-load-license-key.md
     - Manage licenses: 9.about-license/5.manage-license.md
-
+  # nav.ent.end  
   - Quick start:
       - Getting started with NebulaGraph: 2.quick-start/1.quick-start-workflow.md
       - Step 1 Install NebulaGraph: 2.quick-start/2.install-nebula-graph.md