docs: correct x86_64 ref (#53186)

Author: stevenGravy

docs/pages/installation.mdx

@@ -369,7 +369,7 @@ script](#one-line-installation-script).
 
    The following architecture values are available:
 
-   - `amd64` (`x86_84` if downloading an RPM package)
+   - `amd64` (`x86_64` if downloading an RPM package)
    - `arm64`
    - `arm`
    - `386` (`i386` if downloading a DEB or RPM package)