fix(replace): add missing sourceMap documentation

[EduardoAC]

Rollup Plugin Name: @rollup/plugin-replace

This PR contains:

• [ ] bugfix
• [ ] feature
• [ ] refactor
• [X] documentation
• [ ] other

Are tests included?

• [ ] yes (bugfixes and features will not be merged without tests)
• [X] no

Breaking Changes?

• [ ] yes (breaking changes will not be merged unless absolutely necessary)
• [X] no

List any relevant issue numbers:

resolves #1697

Description

Documentation missing for sourceMap inclusion, fixed by adding the option as documented in #1697