fix(curriculum): update custom exception example in Python review (#66102)

curriculum/challenges/english/blocks/review-error-handling/67f39bcb48373420f4f12d62.md

@@ -99,20 +99,20 @@ dashedName: review-error-handling
       return f"Welcome, {username}!"
   ```  
 
-  Here's a how you can use the `login` function from the `InvalidCredentialsError` exception:
+  Here's a how you can use the `login` function with the `InvalidCredentialsError` exception:
 
   ```py
   # failed login attempt
   try:
       message = login("user", "wrongpassword")
-      print(message)
   except InvalidCredentialsError as e:
       print(f"Login failed: {e}")
+  else:
+      print(message)
 
   # successful login attempt
   try:
       message = login("admin", "password123")
-      print(message)
   except InvalidCredentialsError as e:
       # This block is not executed because the login was successful
       print(f"Login failed: {e}")

curriculum/challenges/english/blocks/review-python/67f39e391c9b373069def02c.md

@@ -2041,20 +2041,20 @@ if __name__ == '__main__':
       return f"Welcome, {username}!"
   ```  
 
-  Here's a how you can use the `login` function from the `InvalidCredentialsError` exception:
+  Here's a how you can use the `login` function with the `InvalidCredentialsError` exception:
 
   ```py
   # failed login attempt
   try:
       message = login("user", "wrongpassword")
-      print(message)
   except InvalidCredentialsError as e:
       print(f"Login failed: {e}")
+  else:
+      print(message)
 
   # successful login attempt
   try:
       message = login("admin", "password123")
-      print(message)
   except InvalidCredentialsError as e:
       # This block is not executed because the login was successful
       print(f"Login failed: {e}")