Fix DI typo

_posts/06-02-01-Basic-Concept.md

@@ -4,7 +4,7 @@ isChild: true
 
 ## Basic Concept {#basic_concept_title}
 
-We can demonstrate the concept with a simple, yet naive.
+We can demonstrate the concept with a simple, yet naive example.
 
 Here we have a `Database` class that requires an adapter to speak to the database. We instantiate the
 adapter in the constructor and create a hard dependency. This makes testing difficult and means the `Database` class is