Fixed a typo

second-edition/src/ch10-02-traits.md

@@ -187,7 +187,7 @@ behavior. When we implement the trait on a particular type, we can choose to
 keep or override each method’s default behavior.
 
 Listing 10-15 shows how we could have chosen to specify a default string for
-the `summary` method of the `Summarize` trait instead of choosing to only
+the `summary` method of the `Summarizable` trait instead of choosing to only
 define the method signature like we did in Listing 10-12:
 
 <span class="filename">Filename: lib.rs</span>