Refactor code to improve readability and maintainability

Author: cobanov

summarizer.py

@@ -57,8 +57,6 @@ def main():
     llm_chain = setup_summarization_chain()
     result = llm_chain.run(docs)
 
-    print(result)
-
 
 if __name__ == "__main__":
     main()

yt_summarizer.py

@@ -8,6 +8,7 @@
 
 
 def check_link(link):
+    """The function `check_link` uses a regular expression to check if a given link is a valid YouTube video link."""
     yt_regex = r"^(?:https?:\/\/)?(?:www\.)?youtu(?:be\.com\/watch\?v=|\.be\/)([\w\-\_]+)(?:\?.*)?$"
     return re.match(yt_regex, link) is not None