added new lines to sed command according to stack overflow

[anna-m-gsa]

🎫 Addresses issue: #58

🛠 Summary of changes

Added backslashes to each line of the multiline sed command.

📜 Testing Plan

• Deploy Runner
• Use Runner in a Gitlab Pipeline
• The error "sed: -e expression 1, char 47: unterminated `s' command" is no longer displayed and replaced with expected output for each script step.

👀 Screenshots and Evidence

Before:

After: ...(skipping installation output)