Rollup merge of #101251 - diminishedprime:patch-1, r=JohnTitor

Fix  bad target name in Walkthrough

Walkthrough currently say:

```
rustup target add aarch_64-fuchsia
```
but should say

```
rustup target add aarch64-fuchsia
```
This commit is contained in:
Matthias Krüger 2022-09-01 21:37:12 +02:00 committed by GitHub
commit f6c7c4edba
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@ -79,7 +79,7 @@ the following commands:
```sh
rustup target add x86_64-fuchsia
rustup target add aarch_64-fuchsia
rustup target add aarch64-fuchsia
```
After installing our Fuchsia targets, we can now compile a Rust binary that targets