fix(website): Fix installer list for MacOS (vectordotdev#18364)

This took me a while to track down since I thought this was generated by the cue data but it appears
to be duplicated here.

Closes: vectordotdev#18352

Signed-off-by: Jesse Szwedko <jesse.szwedko@datadoghq.com>

website/content/en/docs/setup/installation/operating-systems/macos.md

@@ -1,6 +1,7 @@
 ---
 title: macOS
 weight: 5
+supported_installers: ["Homebrew", "Vector installer", "Docker"]
 ---
 
 [macOS] is the primary operating system for Apple's Mac computers. It's a certified Unix system based on Apple's Darwin operating system. This page covers installing and managing Vector on the macOS operating system.