docs: fix owl url (#102)

Author: Kent C. Dodds

README.md

@@ -2,7 +2,7 @@
 <h1>jest-dom</h1>
 
 <a href="https://www.emojione.com/emoji/1f989">
-<img height="80" width="80" alt="owl" src="https://raw.githubusercontent.com/testingnapse/jest-dom/master/other/owl.png" />
+<img height="80" width="80" alt="owl" src="https://raw.githubusercontent.com/testing-library/jest-dom/master/other/owl.png" />
 </a>
 
 <p>Custom jest matchers to test the state of the DOM</p>