x/website: https://go.dev/doc/install doesnt contain actual install step for linux

### Go version

go1.22.0

### Output of `go env` in your module/workspace:

```shell
Not applicable
```


### What did you do?

I tried to install go on linux

### What did you see happen?

Could not see the actual installation step 

### What did you expect to see?

Actual step to install go in linux