Address docs build failing issue (#39)

* Add docs build status to README

Co-authored-by: Ashwin Vaidya <ashwinitinvaidya@gmail.com>

.github/workflows/docs.yml

@@ -47,6 +47,8 @@ jobs:
           fi
       - name: Push docs to gh-pages branch
         run: |
+          cd ..
+          git fetch
           git checkout gh-pages
           cp -r docs/build/html/* ./
           git config --local user.email "action@github.com"

README.md

@@ -14,7 +14,8 @@ ___
 [![python](https://img.shields.io/badge/python-3.6%2B-green)]()
 [![pytorch](https://img.shields.io/badge/pytorch-1.7.1%2B-orange)]()
 [![openvino](https://img.shields.io/badge/openvino-2021.4-purple)]()
-![example branch parameter](https://github.com/openvinotoolkit/anomalib/actions/workflows/tox.yml/badge.svg?branch=development)
+[![Code Quality and Coverage](https://github.com/openvinotoolkit/anomalib/actions/workflows/tox.yml/badge.svg)](https://github.com/openvinotoolkit/anomalib/actions/workflows/tox.yml)
+[![Build Docs](https://github.com/openvinotoolkit/anomalib/actions/workflows/docs.yml/badge.svg)](https://github.com/openvinotoolkit/anomalib/actions/workflows/docs.yml)
 
 </div>