Improve docstring

src/imcflibs/pathtools.py

@@ -20,7 +20,7 @@ def parse_path(path):
         'path' : str   # like previous, up to (including) the last separator
         'dname' : str  # segment between the last two separators (directory)
         'fname' : str  # segment after the last separator (filename)
-        'ext' : str    # filename extension, containing max 1 period
+        'ext' : str    # filename extension, containing max 1 dot (included)
     }
 
     Example