Merge branch 'master' into x86-conv-unified-elempack-6

Author: nihui

README.md

@@ -321,7 +321,7 @@ https://github.com/Tencent/ncnn/releases/latest
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-  [<img src="https://img.shields.io/github/actions/workflow/status/Tencent/ncnn/windows-x64-gpu.yml?branch=master&style=for-the-badge&label=build">](https://github.com/Tencent/ncnn/actions?query=workflow%3Awindows-x64-gpu)
+  [<img src="https://img.shields.io/github/actions/workflow/status/Tencent/ncnn/windows.yml?branch=master&style=for-the-badge&label=build">](https://github.com/Tencent/ncnn/actions?query=workflow%3Awindows)
 
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