update function comments

preprocessing.py

@@ -50,12 +50,12 @@ def parse_data(ds):
 
 
 def get_hash(example):
-    """Get hash of content field."""
+    """Get hash of markdown + code"""
     text = example["markdown"] + example["code"]
     return {"hash": hashlib.md5(re.sub(PATTERN, "", text).encode("utf-8")).hexdigest()}
 
 def preprocess(example):
-    """Chain all preprocessing steps into one function to not fill cache."""
+    """add hash column to dataset."""
     results = dict()
     results.update(get_hash(example))
     return results