Update N/A

examples/docs/en-US/steps.md

@@ -120,7 +120,7 @@ Vertical step bars.
 | process-status | status of current step | string | wait/process/finish/error/success | process |
 | finish-status | status of end step | string | wait/process/finish/error/success | finish |
 | align-center | whether step description is centered | boolean | — | false |
-| center | center whole `Steps` component | boolean | false, true | false |
+| center | center whole `Steps` component | boolean | - | false |
 
 ### Step Attributes
 | Attribute      | Description          | Type      | Accepted Values       | Default  |

examples/docs/zh-CN/steps.md

@@ -113,8 +113,8 @@
 | active | 设置当前激活步骤  | number | — | 0 |
 | process-status | 设置当前步骤的状态 | string | wait/process/finish/error/success | process |
 | finish-status | 设置结束步骤的状态 | string | wait/process/finish/error/success | finish |
-| align-center | 标题描述居中对齐 | boolean | false, true | false |
-| center | 组件居中显示 | boolean | false, true | false |
+| align-center | 标题描述居中对齐 | boolean | - | false |
+| center | 组件居中显示 | boolean | - | false |
 
 ### Step Attributes
 | 参数      | 说明    | 类型      | 可选值       | 默认值   |

packages/steps/README.md

@@ -37,7 +37,7 @@ Vue.component('el-step', ElStep)
 | active | 设置当前激活步骤  | number | — | 0 |
 | process-status | 设置当前步骤的状态 | string | wait/process/finish/error/success | process |
 | finish-status | 设置结束步骤的状态 | string | wait/process/finish/error/success | finish |
-| align-center | 标题描述居中对齐 | boolean | false, true | false |
+| align-center | 标题描述居中对齐 | boolean | - | false |
 
 ### Step Attributes
 | 参数      | 说明    | 类型      | 可选值       | 默认值   |