Small wording nit

Author: bvaughn

content/blog/2018-02-07-react-v-16-3.md

@@ -57,9 +57,9 @@ We are also adding a new static lifecycle, `getDerivedStateFromProps`, as a safe
 
 Although it is not possible for strict mode to catch all problems (e.g. certain types of mutation), it can help with many. If you see warnings in strict mode, those things will likely cause bugs for async rendering.
 
-In version 16.3, `StrictMode` helps with only a handful of things:
+In version 16.3, `StrictMode` helps with:
 * Identifying components with unsafe lifecycles
-* Identifying usage of the legacy string ref API
+* Warning about legacy string ref API usage
 * Detecting unexpected side effects
 
 Additional functionality will be added with future releases of React.