fix run.sh in kubernetes deploy tutorial

[NikiforovG]

There was an inconsistent variable name.

📚 Context

🧠 Description of Changes

There was an inconsistent variable name. stopRunningProcess() was looking at APP_PID variable while APP_ID was defined at application run.

Revised:

streamlit run ${HOME}/app/streamlit_app.py &
APP_PID=${!}

wait ${APP_PID}

Current:

streamlit run ${HOME}/app/streamlit_app.py &
APP_ID=${!}

wait ${APP_ID}

💥 Impact

Small typo fix.

Size:

• Small
• Not small

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[lukasmasuch]

@copilot resolve the merge conflicts in this pull request