Copy to clipboard includes command prompt

[AndyOGo]

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• I have searched open and closed issues and pull requests for duplicates, using these search terms:
  • command prompt
  • command not found
  • Copy to clipboard
• I have checked the latest main branch to see if this has already been fixed, in this file:
  • yes

URL to the section(s) of the book with this problem: https://doc.rust-lang.org/book/ch01-01-installation.html#installing-rustup-on-linux-or-macos

Description of the problem: Copy to clipboard includes command prompt $ and result in following error when pasted into any CLI:

-bash: $: command not found

Suggested fix: Copy to clipboard should strip any status information like command prompt.