list fix for the quick start (#2783)

docs-2.0/2.quick-start/3.quick-start-on-premise/2.install-nebula-graph.md

@@ -1,4 +1,4 @@
-# 步骤 1：安装{{nebula.name}}
+# 安装{{nebula.name}}
 
 {% include "/source_install-nebula-graph-by-rpm-or-deb.md" %}
 <!-- The line above is for content reusing. The source file is in the docs-2.0/reuse directory. -->

docs-2.0/2.quick-start/3.quick-start-on-premise/3.connect-to-nebula-graph.md

@@ -1,4 +1,4 @@
-# 步骤 3：连接{{nebula.name}}
+# 连接{{nebula.name}}
 
 {% include "/source_connect-to-nebula-graph.md" %}
 <!-- The line above is for content reusing. The source file is in the docs-2.0/reuse directory. -->

docs-2.0/2.quick-start/3.quick-start-on-premise/4.nebula-graph-crud.md

@@ -1,4 +1,4 @@
-# 步骤 4：使用常用 nGQL（CRUD 命令）
+# 使用常用 nGQL（CRUD 命令）
 
 本文介绍{{nebula.name}}查询语言的基础语法，包括用于 Schema 创建和常用增删改查操作的语句。
 

docs-2.0/2.quick-start/3.quick-start-on-premise/5.start-stop-service.md

@@ -1,4 +1,4 @@
-# 步骤 2：启动{{nebula.name}}服务
+# 启动{{nebula.name}}服务
 
 {% include "/source_manage-service.md" %}
 <!-- The line above is for content reusing. The source file is in the docs-2.0/reuse directory. -->