Fix replacing in GitHub code editor

[forgetso]

Describe the bug

Can't replace code in the GitHub code editor.

Please provide the following information:

• Search and Replace Version: 2.0.8
• Web page URL: https://github.com/paritytech/substrate-contracts-node/blob/813d99f47d17400d421663807b9e08fca75cbaf2/zombienet.toml
• Options checked (Input fields only etc.): Hidden Inputs, Replace HTML