updated README.md

README.md

@@ -32,7 +32,7 @@ If your program has the main renderer, your program could call ThorVG APIs while
 ThorVG has the threading mechanism so that it tries to acquire the next scenes without delay. It runs its own fine-tuned task-scheduler built on threading pools, encapsulates all the jobs such as encoding, decoding, updating, rendering with tasks. As a result, all the tasks could run on multi-processing. The task scheduler is readied for hiding complexity, easier integration and user convenience. Thus the policy is optional, users can select it by their demands.<br />
 <br />
 <p align="center">
-  <img width="900" height="313" src="https://github.com/Samsung/thorvg/blob/master/res/example_threading.png">
+  <img width="900" height="313" src="https://github.com/Samsung/thorvg/blob/master/res/example_thread.png">
 </p>
 <br />