Use logo in readme from within the repository (#37627)

Author: oxinabox

README.md

@@ -1,7 +1,7 @@
 <a name="logo"/>
 <div align="center">
 <a href="https://julialang.org/" target="_blank">
-<img src="https://julialang.org/images/logo_hires.png" alt="Julia Logo" width="210" height="142"></img>
+<img src="doc/src/assets/logo.svg" alt="Julia Logo" width="210" height="142"></img>
 </a>
 </div>