Update README.md

Signed-off-by: Samuel Kendall <kinguser981@gmail.com>

README.md

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 # OrangeFox Custom Recovery Tree
-![cap_sprout](https://xiaomitools.com/wp-content/uploads/2020/04/of_forums_header_v2_hed_2-1024x432.jpg)
+![cap_sprout](https://xiaomitools.com/wp-content/uploads/2020/04/of_forums_header_v2_hed_2-1024x432.jpg](https://wiki.orangefox.tech/banner.svg)
 
 Buils your own OrangeFox custom recovery for Nokia 5.3 (CAP_sprout).