Update profile now uses "avatarUrl" to correctly update avatar_url (#21555)

I noticed in the function to updateProfile the "avatar_url" was not using the passed in "avatarUrl" value.

Co-authored-by: Charis <26616127+charislam@users.noreply.github.com>

apps/docs/content/guides/getting-started/tutorials/with-react.mdx

@@ -176,7 +176,7 @@ export default function Account({ session }) {
       id: user.id,
       username,
       website,
-      avatar_url,
+      avatar_url: avatarUrl,
       updated_at: new Date(),
     }