Web IDE: Long output shouldn't require horizontal scrolling

NOTE: @claudebarde initially discovered this issue.

Steps to reproduce:

1. Visit https://ide.ligolang.org/p/q0UTXg7uSzIY81fKxNsX8Q
2. Compile the contract
3. Note that the output is rather long, and requires horizontal scrolling to read its entirety. This creates accessibility issues.

Possible solution:

@claudebarde noted that a simple solution might just be a matter of adding the following CSS rule: white-space: break-spaces;