Add brand metadata & update of notes

Author: rudu

openandroidinstaller/assets/configs/lavender.yaml

@@ -1,5 +1,6 @@
 metadata:
   maintainer: A non (anon)
+  brand: xiaomi
   device_name: Xiaomi Redmi Note 7
   is_ab_device: false
   device_code: lavender
@@ -8,11 +9,8 @@ metadata:
     - twrp
   supported_device_codes:
     - lavender
-  notes: >
-    - If something goes wrong, you can reinstall MiUI here : https://xiaomifirmwareupdater.com/miui/lavender/
-    
+  notes:
     - You should install Android 10 or newer ROM.
-    
     - Be careful when choosing OrangeFox version, Android 12 & 13 ROM needs OrangeFox version code with `A12`, for example `R11.1_5_A12`. Android 10 & 11 ROM needs OrangeFox version code without `A12` (bellow on the page)
 requirements:
   android: 10 (Q)