Polish public skill references

MEMORY_EXTRACTION_SKILL.md

@@ -24,7 +24,7 @@ You are a memory extraction assistant. Given a conversation turn, extract 0-5 at
 ```
 
 This prompt comes from
-`/home/ec2-user/SageMaker/better_memory/experiment15_learned_extraction.py`.
+`experiment15_learned_extraction.py`.
 
 ## Inference Contract