fix URL redirect mac.md

Author: partev

_get_started/installation/mac.md

@@ -16,7 +16,7 @@ PyTorch is supported on macOS 10.15 (Catalina) or above.
 It is recommended that you use Python 3.9 - 3.12.
 You can install Python either through the Anaconda
 package manager (see [below](#anaconda)), [Homebrew](https://brew.sh/), or
-the [Python website](https://www.python.org/downloads/mac-osx/).
+the [Python website](https://www.python.org/downloads/macos/).
 
 ### Package Manager
 {: #mac-package-manager}