Update overview image size for readme again.

Author: viferga

README.md

@@ -22,7 +22,7 @@ metacall('sum', 3, 4); // 7
 ```
 
 <div align="center">
-  <a href="https://medium.com/@metacall/call-functions-methods-or-procedures-between-programming-languages-with-metacall-58cfece35d7" target="_blank"><img src="https://raw.githubusercontent.com/metacall/core/master/deploy/images/overview.png" alt="M E T A C A L L" style="max-width:100%;" width="400" height="284">
+  <a href="https://medium.com/@metacall/call-functions-methods-or-procedures-between-programming-languages-with-metacall-58cfece35d7" target="_blank"><img src="https://raw.githubusercontent.com/metacall/core/master/deploy/images/overview.png" alt="M E T A C A L L" style="max-width:100%;" width="300" height="213">
 </div>
 
 # Table Of Contents