SKALE-2077 Fixed Naming

.github/workflows/dockerimagesim.yml

@@ -7,8 +7,8 @@ jobs:
     - name: install python 3.7
       run: |
         sudo apt update; sudo apt install software-properties-common;
-        sudo add-apt-repository ppa:deadsnakes/ppa
-        sudo apt install python3.7
+        sudo add-apt-repository ppa:deadsnakes/ppa;
+        sudo apt install python3.7;
     - name: Login to docker
       env:
         GITHUB_TOKEN: ${{ secrets.DOCKER_SECRET }}