Update event.mdx

Author: reject-i

src/pages/tutorial/cw-contract/event.mdx

@@ -170,7 +170,7 @@ call. Additionally, there is a possibility to add attributes directly to the res
 sugar. By default, every execution emits a standard "wasm" event. Adding attributes to the result
 adds them to the default event.
 
-We can check if events are properly emitted by contract. It is not always done, as it is much of
+We can check if events are properly emitted by the contract. It is not always done, as it is much of
 boilerplate in test, but events are, generally, more like logs - not necessarily considered main
 contract logic. Let's now write single test checking if execution emits events: