Merge pull request dabeaz-course#60 from alexdelorenzo/patch-1

Fix grammar

Author: dabeaz

Notes/05_Object_model/01_Dicts_revisited.md

@@ -248,7 +248,7 @@ You can view it.
 >>>
 ```
 
-This chain is called the **Method Resolution Order**.  The find an
+This chain is called the **Method Resolution Order**.  To find an
 attribute, Python walks the MRO in order. The first match wins.
 
 ### MRO in Multiple Inheritance