Add fork icon

Author: evertlammerts

README.md

@@ -44,6 +44,10 @@ pip install 'duckdb[all]'
 
 ## Development
 
+Start by <a href="https://github.com/duckdb/duckdb-python/fork"><svg height="16" viewBox="0 0 16 16" version="1.1" width="16">
+    <path fill-rule="evenodd" d="M5 3.25a.75.75 0 11-1.5 0 .75.75 0 011.5 0zm0 2.122a2.25 2.25 0 10-1.5 0v.878A2.25 2.25 0 005.75 8.5h1.5v2.128a2.251 2.251 0 101.5 0V8.5h1.5a2.25 2.25 0 002.25-2.25v-.878a2.25 2.25 0 10-1.5 0v.878a.75.75 0 01-.75.75h-4.5A.75.75 0 015 6.25v-.878z"></path>
+</svg>forking duckdb-python</a>.
+
 ### Cloning
 
 After forking this duckdb-python, we recommend you clone your fork as follows: