chore: update server version in readme without template (#81)

Author: sudharsan-selvaraj

.github/workflows/doc.yml

@@ -21,20 +21,15 @@ jobs:
 
          - name: Update README with latest commit id and push to repo
            run: |
-              npm install -g mustache
-              touch data.json
-              echo "{\"SERVER_VERSION\": \"${{ github.event.client_payload.version }}\"}" > data.json
+              echo "SERVER_VERSION:" ${{ github.event.client_payload.version }}
               git config --global user.name "GitHub Actions"
               git config --global user.email "[email protected]"
               git status
               BRANCH_NAME=$(git branch | sed -n -e 's/^\* \(.*\)/\1/p')
               git pull --rebase origin main
               git checkout -b run-test-upstream-${{ github.event.client_payload.version }}
               git pull --rebase origin main
-              cat data.json
-              mustache data.json template.mustache > README_new.md
-              mv README_new.md README.md
-              rm -rf data.json
+              sed -i "s/appium_flutter_server: [0-9]*\.[0-9]*\.[0-9]*/appium_flutter_server: ${{ github.event.client_payload.version }}/" README.md
               git add README.md
               git commit -m "Update README with latest commit ID - ${{ github.event.client_payload.version }}"
               git push -u origin run-test-upstream-${{ github.event.client_payload.version }}