Correct documentation for left/right super key

The super key maps to ⌘ for the USB driver, but for the VNC
driver ⌘ is produced by left/right Alt, so we can't promise
that leftSuper/rightSuper produces ⌘.

Author: torarnv

cmd/packer-sdc/internal/renderdocs/docs-partials/packer-plugin-sdk/bootcommand/BootConfig.mdx

@@ -42,7 +42,7 @@ command, they will be replaced by the proper key:
 
 -   `<leftShift> <rightShift>` - Simulates pressing the shift key.
 
--   `<leftSuper> <rightSuper>` - Simulates pressing the ⌘ or Windows key.
+-   `<leftSuper> <rightSuper>` - Simulates pressing the super key.
 
   - `<wait> <wait5> <wait10>` - Adds a 1, 5 or 10 second pause before
     sending any additional keys. This is useful if you have to generally