Update ci badge (#9339)

Author: rohitgr7

README.md

@@ -128,7 +128,7 @@ conda install pytorch-lightning -c conda-forge
 
 the actual status of 1.4 \[stable\] is following:
 
-![CI base testing](https://github.com/PyTorchLightning/pytorch-lightning/workflows/CI%20base%20testing/badge.svg?branch=release%2F1.4.x&event=push)
+![CI basic testing](https://github.com/PyTorchLightning/pytorch-lightning/workflows/CI%20basic%20testing/badge.svg?branch=release%2F1.4.x&event=push)
 ![CI complete testing](https://github.com/PyTorchLightning/pytorch-lightning/workflows/CI%20complete%20testing/badge.svg?branch=release%2F1.4.x&event=push)
 ![PyTorch & Conda](https://github.com/PyTorchLightning/pytorch-lightning/workflows/PyTorch%20&%20Conda/badge.svg?branch=release%2F1.4.x&event=push)
 ![TPU tests](https://github.com/PyTorchLightning/pytorch-lightning/workflows/TPU%20tests/badge.svg?branch=release%2F1.4.x&event=push)