Fixing 'names' doc for 'read_csv'

Author: bessarabov

pandas/io/parsers.py

@@ -120,7 +120,7 @@
     data rather than the first line of the file.
 names : array-like, optional
     List of column names to use. If file contains no header row, then you
-    should explicitly pass ``header=None``. Duplicates in this list are not
+    should explicitly pass ``header=0``. Duplicates in this list are not
     allowed.
 index_col : int, str, sequence of int / str, or False, default ``None``
   Column(s) to use as the row labels of the ``DataFrame``, either given as