config: change default macOS machine provider to libkrun

Change the containers.conf comments to correctly identify the default
macOS machine provider as libkrun.

Signed-off-by: Jake Correnti <[email protected]>

Author: jakecorrenti

pkg/config/containers.conf

@@ -911,9 +911,9 @@ default_sysctls = [
 #    wsl     - Windows Subsystem for Linux (Default)
 #    hyperv  - Windows Server Virtualization
 # Mac: there are currently two options:
-#    applehv - Default Apple Hypervisor (Default)
 #    libkrun - Launch virtual machines using the libkrun platform, optimized
-#              for sharing GPU with the machine.
+#              for sharing GPU with the machine. (Default)
+#    applehv - Launch virtual machines using the vfkit platform.
 #provider = ""
 
 # Rosetta supports running x86_64 Linux binaries on a Podman machine on Apple silicon.