Corrected Go Speed to Gopeed in file-tools.md

[milndr]

Corrected Go Speed to Gopeed under Download Managers section in file-tools.md

Description

Changed Go Speed to Gopeed

Context

It's badly written

Types of changes

• [ ] Bad / Deleted sites removal
• [x] Grammar / Markdown fixes
• [ ] Content addition (sites, projects, tools, etc.)
• [ ] New Wiki section

Checklist:

• [x] I have read the contribution guide.
• [x] I have made sure to search before making any changes.
• [x] My code follows the code style of this project.

[nbats]

Thank you but they have it listed as Go Speed on their github, and we just feel its a much better name than gopeed.