fix mdbook redirection table

[uta8a]

Link overloading in Speaker note in URL: https://google.github.io/comprehensive-rust/hello-world/hello-world.html is broken.

• broken: https://google.github.io/comprehensive-rust/hello-world/basic-syntax/functions-interlude.html (404)
• correct: https://google.github.io/comprehensive-rust/control-flow-basics/functions.html

The reason why it is broken is below.

Original markdown is here

comprehensive-rust/src/hello-world/hello-world.md

Lines 36 to 37 in 43474d2

	- Rust uses macros for situations where you want to have a variable number of
	arguments (no function [overloading](basic-syntax/functions-interlude.md)).

[overloading](basic-syntax/functions-interlude.md)

Page path is /hello-world/hello-world.html, so overloading link become /hello-world/basic-syntax/functions-interlude.html, which is 404.

I feel it is better to use redirect to exact path, so I edit book.toml and make link redirect to /basic-syntax/functions-interlude.html, which re-redirect to path /control-flow-basics/functions.html

comprehensive-rust/book.toml

Line 114 in 43474d2

'basic-syntax/functions-interlude.html' = '../control-flow-basics/functions.html'

[djmitche]

Thank you!

I think we should try to avoid redirect chains, so if you could change book.toml so that it redirects to the final location, that would be great.

Also, please update hello-world.md to point directly to the target page. The redirect is great in case someone bookmarked the page, but let's keep the links in the book pointing to the "real" location.

[uta8a]

Thank you for your review!

I agree that redirects should be avoided. I fixed the docs accordingly.

Also, if I modify hello-world.md's link, isn't it necessary to update book.toml? If so, I will remove the redirect part in book.toml I added.

[djmitche]

Thank you! I agree that the book.toml change isn't critical here. We have historically added such redirects in case someone had an old URL bookmarked or used in a lnik from elsewhere -- both of which are unlikely here. However, the redirect doesn't hurt anything!