Replace banner image reference in README

This now takes from the banner svg file in the branding folder rather than an external reference that could potentially change or be erased over time.

README.md

@@ -1,4 +1,4 @@
-<a href="https://drive.google.com/uc?export=view&id=1BBIw9VyTch1mp0up4aNLgewJd8CXk1WN"><img src="https://drive.google.com/uc?export=view&id=1BBIw9VyTch1mp0up4aNLgewJd8CXk1WN" title="Click to enlarge picture" />
+![Banner](branding/banner.svg)
 
 # Bell Claims
 
@@ -60,4 +60,3 @@ If you encounter any bugs, crashes, or unexpected behaviour, please [open an iss
 
 ## License
 Solid Claims is licensed under the permissive MIT license. Please view [LICENSE](https://gitlab.com/Mizarc/BellClaims/-/blob/main/LICENSE) for more info.
-