doc: update document

- add section about ballance related props

docs/mkdocs.yml

@@ -11,6 +11,7 @@ nav:
     - 'Install Plugin': 'en/install-plugin.md'
     - 'Configure Plugin': 'en/configure-plugin.md'
     - 'Virtools Properties': 'en/virtools-properties.md'
+    - 'Ballance Properties': 'en/ballance-properties.md'
     - 'Import and Export Virtools Document': 'en/import-export-virtools.md'
     - 'Group Operation': 'en/group-operations.md'
     - 'Legacy Alignment': 'en/legacy-align.md'
@@ -27,6 +28,7 @@ nav:
     - '安装插件': 'zh-cn/install-plugin.md'
     - '配置插件': 'zh-cn/configure-plugin.md'
     - 'Virtools属性': 'zh-cn/virtools-properties.md'
+    - 'Ballance属性': 'zh-cn/ballance-properties.md'
     - '导入导出Virtools文档': 'zh-cn/import-export-virtools.md'
     - '按组操作': 'zh-cn/group-operations.md'
     - '传统对齐': 'zh-cn/legacy-align.md'