changelog for 2.6.1 (#14554)

CHANGELOG.en-US.md

 ## Changelog
 
+### 2.6.1
+
+*2019-03-03*
+
+#### Bug fixes
+
+- **Don't specify node version** (by @iamkun in #14546)
+- Fix doc directory in `deloy-faas.sh` (by @ziyoung in #14553)
+- Fix date style issue in changelog for 2.6.0 (by @island205 in #14547)
+- Fix doc typo (by @wack6 in #14552)
+
 ### 2.6.0
 
 *2019-03-01*

CHANGELOG.es.md

 ## Changelog
 
+### 2.6.1
+
+*2019-03-03*
+
+#### Bug fixes
+
+- **Don't specify node version** (by @iamkun in #14546)
+- Fix doc directory in `deloy-faas.sh` (by @ziyoung in #14553)
+- Fix date style issue in changelog for 2.6.0 (by @island205 in #14547)
+- Fix doc typo (by @wack6 in #14552)
+
 ### 2.6.0
 
 *2019-03-01*

CHANGELOG.fr-FR.md

 ## Changelog
 
+### 2.6.1
+
+*2019-03-03*
+
+#### Bug fixes
+
+- **Don't specify node version** (by @iamkun in #14546)
+- Fix doc directory in `deloy-faas.sh` (by @ziyoung in #14553)
+- Fix date style issue in changelog for 2.6.0 (by @island205 in #14547)
+- Fix doc typo (by @wack6 in #14552)
+
 ### 2.6.0
 
 *2019-03-01*

CHANGELOG.zh-CN.md

 ## 更新日志
 
+### 2.6.1
+
+*2019-03-03*
+
+#### 修复
+
+- **不再指定 node 版本** (by @iamkun in #14546)
+- 调整 `deloy-faas.sh` 中的文档目录 (by @ziyoung in #14553)
+- 调整 2.6.0 中 changelog 日期样式 (by @island205 in #14547)
+- 修复拼写错误 (by @wack6 in #14552)
+
 ### 2.6.0
 
 *2019-03-01*