[Doc]: update changelog (#9568)

Author: RangiLyu

README.md

@@ -77,7 +77,7 @@ Apart from MMDetection, we also released a library [mmcv](https://github.com/ope
 
 ### 💎 Stable version
 
-**2.27.0** was released in 26/12/2022:
+**2.27.0** was released in 5/1/2023:
 
 - Support receptive field search of CNN models([TPAMI 2022: RF-Next](http://mftp.mmcheng.net/Papers/22TPAMI-ActionSeg.pdf)).
 

README_zh-CN.md

@@ -76,7 +76,7 @@ MMDetection 是一个基于 PyTorch 的目标检测开源工具箱。它是 [Ope
 
 ### 💎 稳定版本
 
-最新的 **2.27.0** 版本已经在 2022.12.26 发布:
+最新的 **2.27.0** 版本已经在 2023.1.5 发布:
 
 - 支持 CNN 模型的感受野搜索 ([TPAMI 2022: RF-Next](http://mftp.mmcheng.net/Papers/22TPAMI-ActionSeg.pdf))。
 

docs/en/changelog.md

@@ -1,6 +1,6 @@
 ## Changelog
 
-### v2.27.0 (26/12/2022)
+### v2.27.0 (5/1/2023)
 
 #### Highlights
 
@@ -15,6 +15,7 @@
 - Add minimum GitHub token permissions for workflows (#8928)
 - Delete compatible code for parrots in roi extractor (#9503)
 - Deprecate np.bool Type Alias (#9498)
+- Replace numpy transpose with torch permute to speed-up data pre-processing (#9533)
 
 #### Documents
 
@@ -23,8 +24,8 @@
 
 #### Contributors
 
-A total of 11 developers contributed to this release.
-Thanks @gasvn, @lzyhha, @jbwang1997, @zachcoleman, @chenyuwang814, @MilkClouds, @Fizzez, @boahc077, @apatsekin, @zytx121, @DonggeunYu
+A total of 12 developers contributed to this release.
+Thanks @Min-Sheng, @gasvn, @lzyhha, @jbwang1997, @zachcoleman, @chenyuwang814, @MilkClouds, @Fizzez, @boahc077, @apatsekin, @zytx121, @DonggeunYu
 
 ### v2.26.0 (23/11/2022)