Update solution.py

Season-1/Level-3/solution.py

@@ -37,12 +37,9 @@ def safe_path(path):
 # traversal is about to happen and that the final path ends up in the
 # intended directory.
 
-# The GitHub Security Lab covered this flaw in one episode of Security
-# Bites, its series on secure programming: https://youtu.be/sQGxdwRePh8
-
-# We also covered this flaw in a blog post about OWASP's Top 10 proactive controls:
+# We covered this flaw in a blog post about OWASP's Top 10 proactive controls:
 # https://github.blog/2021-12-06-write-more-secure-code-owasp-top-10-proactive-controls/
 
 
 # Contribute new levels to the game in 3 simple steps!
-# Read our Contribution Guideline at github.com/skills/secure-code-game/blob/main/CONTRIBUTING.md
+# Read our Contribution Guideline at github.com/skills/secure-code-game/blob/main/CONTRIBUTING.md