Add example of LEMI-424 filename in scan_path2data docstring

lemi2seed/lemi_data.py

@@ -57,6 +57,8 @@ class LemiData():
         """
         Scan data directory provided by the user for LEMI generated data files.
         LEMI-424 filenaming covention: YYYYMMDDHHMM.TXT
+        Ex: .../DATA0110/202009302105.TXT
+            where ".../DATA0110/" is the user-provided path to their dataset.
         """
         data_files = [tmp for tmp in Path(self.path2data).glob('*')
                       if re.match(r"^\w{12}.txt$", tmp.parts[-1], re.IGNORECASE)]