Add comments section to language tour
- [Creating a project](./getting-started/creating-a-project.md)
- [Example projects](./getting-started/example-projects.md)
- [Language tour](./tour/README.md)
+ - [Comments](./tour/comments.md)
- [String](./tour/string.md)
- [Bool](./tour/bool.md)
- [Int & Float](./tour/int-and-float.md)
