Link the github tag for relnotes (not live yet)

Author: cuviper

posts/2023-06-01-Rust-1.70.0.md

@@ -13,7 +13,7 @@ If you have a previous version of Rust installed via rustup, you can get 1.70.0
 rustup update stable
 ```
 
-If you don't have it already, you can [get `rustup`](https://www.rust-lang.org/install.html) from the appropriate page on our website, and check out the [detailed release notes for 1.70.0](https://github.com/rust-lang/rust/blob/master/RELEASES.md#version-1700-2023-06-01) on GitHub.
+If you don't have it already, you can [get `rustup`](https://www.rust-lang.org/install.html) from the appropriate page on our website, and check out the [detailed release notes for 1.70.0](https://github.com/rust-lang/rust/releases/tag/1.70.0) on GitHub.
 
 If you'd like to help us out by testing future releases, you might consider updating locally to use the beta channel (`rustup default beta`) or the nightly channel (`rustup default nightly`). Please [report](https://github.com/rust-lang/rust/issues/new/choose) any bugs you might come across!
 
@@ -102,7 +102,7 @@ When `#[test]` functions are compiled, the executable gets a command-line interf
 
 ### Other changes
 
-Check out everything that changed in [Rust](https://github.com/rust-lang/rust/blob/stable/RELEASES.md#version-1700-2023-06-01), [Cargo](https://github.com/rust-lang/cargo/blob/master/CHANGELOG.md#cargo-1700-2023-06-01, and [Clippy](https://github.com/rust-lang/rust-clippy/blob/master/CHANGELOG.md#rust-170).
+Check out everything that changed in [Rust](https://github.com/rust-lang/rust/releases/tag/1.70.0), [Cargo](https://github.com/rust-lang/cargo/blob/master/CHANGELOG.md#cargo-1700-2023-06-01, and [Clippy](https://github.com/rust-lang/rust-clippy/blob/master/CHANGELOG.md#rust-170).
 
 ## Contributors to 1.70.0