Update README.md

Author: tannerlinsley

README.md

@@ -48,11 +48,21 @@ Still on **React Query v4**? No problem! Check out the v4 docs here: https://tan
 ## Partners
 
 <a href="https://www.speakeasy.com/product/react-query?utm_source=tanstack&utm_campaign=tanstack">
-  <img
-    src="https://tanstack.com/_build/assets/speakeasy-light-UpY7QmwQ.svg"
-    alt="Speakeasy Logo"
-    style="background-color: white; padding: 8px; border-radius: 8px;"
-  />
+  <picture>
+    <source
+      srcset="https://tanstack.com/_build/assets/speakeasy-dark-BjP-Hd9M.svg"
+      media="(prefers-color-scheme: dark)"
+    />
+    <source
+      srcset="https://tanstack.com/_build/assets/speakeasy-light-UpY7QmwQ.svg"
+      media="(prefers-color-scheme: light)"
+    />
+    <!-- fallback -->
+    <img
+      src="https://tanstack.com/_build/assets/speakeasy-light-UpY7QmwQ.svg"
+      alt="Speakeasy Logo"
+    />
+  </picture>
 </a>
 
 ## Contributing
@@ -62,5 +72,4 @@ View the contributing guidelines [here](/CONTRIBUTING.md)
 ### [Become a Sponsor!](https://github.com/sponsors/tannerlinsley/)
 
 <!-- Use the force, Luke -->
-
 [