Update the linking-to-items-by-name links

Author: aleb

posts/2020-11-19-Rust-1.48.md

@@ -131,7 +131,7 @@ items by name"][intra-docs] section of the rustdoc book for more. There is also
 a post on Inside Rust [on the history of this feature][intra-history], written
 by some of the contributors behind it!
 
-[intra-docs]: https://doc.rust-lang.org/stable/rustdoc/linking-to-items-by-name.html
+[intra-docs]: https://doc.rust-lang.org/rustdoc/write-documentation/linking-to-items-by-name.html
 [intra-history]: https://blog.rust-lang.org/inside-rust/2020/09/17/stabilizing-intra-doc-links.html
 
 ### Adding search aliases

posts/inside-rust/2020-09-17-stabilizing-intra-doc-links.md

@@ -173,7 +173,7 @@ In particular, there have been a ton of people who stepped up to help [convert t
 
 [`javadoc`]: https://www.oracle.com/java/technologies/javase/javadoc-tool.html
 [`rustdoc`]: https://doc.rust-lang.org/rustdoc/
-[Intra-doc links]: https://doc.rust-lang.org/nightly/rustdoc/linking-to-items-by-name.html
+[Intra-doc links]: https://doc.rust-lang.org/rustdoc/write-documentation/linking-to-items-by-name.html
 [items]: https://doc.rust-lang.org/reference/items.html
 [broken-string-links]: https://github.com/rust-lang/rust/issues/32129
 [tracking-issue]: https://github.com/rust-lang/rust/issues/43466

posts/inside-rust/2021-01-19-changes-to-rustdoc-team.md

@@ -10,7 +10,7 @@ Recently, there have been a lot of improvements in rustdoc. It was possible than
 
 ## Adding a new team leader
 
-[Joshua](https://github.com/jyn514) has been helping me **a lot** on the leading parts by tagging issues and mentoring newcomers. But at the same time, he initiated great changes in the rustdoc codebase that led to huge performance improvements, he finished the "intra doc link" features which is now stable after years of instability (more information [here](https://doc.rust-lang.org/rustdoc/linking-to-items-by-name.html)). He also did multiple additional things but let's stop the listing here. :)
+[Joshua](https://github.com/jyn514) has been helping me **a lot** on the leading parts by tagging issues and mentoring newcomers. But at the same time, he initiated great changes in the rustdoc codebase that led to huge performance improvements, he finished the "intra doc link" features which is now stable after years of instability (more information [here](https://doc.rust-lang.org/rustdoc/write-documentation/linking-to-items-by-name.html)). He also did multiple additional things but let's stop the listing here. :)
 
 Overall, he's been an enormous help and making him co-lead is just making official everything's he's been doing since he joined the rustdoc team (and even before!). I'm glad to have him on the team and as co-lead.