Fix format

Author: Shehab Abdel-Salam

chapters/chapter10_oop/exercises/exercise_77.py

@@ -11,15 +11,13 @@ def create_content(self) -> str: ...
 
 
 class Blogger:
-
     def add_post(self, title: str):
         return f"Creating a new post: {title}"
 
     # TODO: Write create_content() method.
 
 
 class Vlogger:
-
     def add_video(self, title: str) -> None:
         return f"Creating a new video: {title} with path: /videos/{title}.mp4"