Fix link in events_tutorial.md

Delete slash for proper rendering.

Author: Amanda Butler

docs/tutorials/using_apis/events_tutorial.md

@@ -34,7 +34,7 @@ Note that though this document assumes the presence of a single event loop in th
 
 Once you start the event loop, it can post events. Let's consider an example of a program that attaches two interrupt handlers for an InterruptIn object, using the InterruptIn `rise` and `fall` functions. The `rise` handler will run in interrupt context, and the `fall` handler will run in user context (more specifically, in the context of the event loop's thread). The full code for the example can be found below:
 
-[![View code](https://www.mbed.com/embed/?url=https://os.mbed.com/teams/mbed_example/code/events_ex_1/)](https://os.mbed.com/teams/mbed_example/code/events_ex_1/file/69c11c7877b6/main.cpp/)
+[![View code](https://www.mbed.com/embed/?url=https://os.mbed.com/teams/mbed_example/code/events_ex_1/)](https://os.mbed.com/teams/mbed_example/code/events_ex_1/file/69c11c7877b6/main.cpp)
 
 The above code executes two handler functions (`rise_handler` and `fall_handler`) in two different contexts: