Fix typo in test dir name + update examples

Author: joefarebrother

python/ql/src/Functions/examples/IncorrectRaiseInSpecialMethod.py

@@ -5,15 +5,15 @@ def __init__(self, a):
     def __add__(self, other):
         # BAD: Should return NotImplemented instead of raising
         if not isinstance(other,A):
-            raise TypeError(f"Cannot add A to {other.__type__}")
+            raise TypeError(f"Cannot add A to {other.__class__}")
         return A(self.a + other.a)
 
 class B:
     def __init__(self, a):
         self.a = a 
 
     def __add__(self, other):
-        # GOOD: Returning NotImplemented allows for other classes to support adding do B.
+        # GOOD: Returning NotImplemented allows for the operation to fallback to other implementations to allow other classes to support adding to B.
         if not isinstance(other,B):
             return NotImplemented
         return B(self.a + other.a)

python/ql/src/Functions/examples/IncorrectRaiseInSpecialMethod3.py

@@ -1,4 +1,4 @@
 class D:
     def __hash__(self):
         # BAD: Use `__hash__ = None` instead.
-        raise NotImplementedError(f"{self.__type__} is unhashable.")
+        raise NotImplementedError(f"{self.__class__} is unhashable.")