Update README.md

README.md

+# Executor Service
+
+![img_1.png](ThreadPool.png)
+
+*topics:*
+* Thread Pool
+* Executor Service
+* Load Test
+
+*Some Useful links:*
+- [Thread Pool](https://jenkov.com/tutorials/java-concurrency/thread-pools.html)
+- [Executor Service 1](https://jenkov.com/tutorials/java-util-concurrent/executorservice.html)
+- [Executor Service 2](https://youtu.be/9DvDheKRJ9Y?si=GUyCIyLRgDusmAcu)
+- [Build Your Own Load Test](https://medium.com/@yusufenes3494/how-to-build-your-own-load-test-a-step-by-step-guide-1a8367f7f6a2)