Fixed example [skip ci]

ankane · ankane · commit 62a08391b4a4 · 2023-06-28T18:33:47.000-04:00
diff --git a/README.md b/README.md
@@ -254,7 +254,7 @@ or your pool
 async def init(conn):
     await register_vector(conn)
 
-pool = await asyncpg.create_pool(..., init=register_vector)
+pool = await asyncpg.create_pool(..., init=init)
 ```
 
 Insert a vector
