Update _get_started/installation/mac.md

Co-authored-by: Svetlana Karslioglu <svekars@meta.com>

Author: Camyll

_get_started/installation/mac.md

@@ -35,7 +35,7 @@ If you installed Python via Homebrew or the Python website, `pip` was installed
 ### pip
 {: #mac-pip}
 
-To install PyTorch via pip, use the following the command, depending on your Python version:
+To install PyTorch via pip, use the following command, depending on your Python version:
 
 ```bash
 # Python 3.x