Update coroutines-basics.md

Author: SebastianAigner

docs/topics/coroutines-basics.md

@@ -6,7 +6,7 @@ This section covers basic coroutine concepts.
 
 ## Your first coroutine
 
-A _coroutine_ is an instance of suspendable computation. It is conceptually similar to a thread, in the sense that it 
+A _coroutine_ is an instance of a suspendable computation. It is conceptually similar to a thread, in the sense that it 
 takes a block of code to run that works concurrently with the rest of the code.
 However, a coroutine is not bound to any particular thread. It may suspend its execution in one thread and resume in another one.