Wrong documentation about PyTables threading support
Recently, I have noticed that there are some [differencies between PyTables and Pandas documentation about threading support](https://github.com/PyTables/PyTables/issues/603).

[Threading PyTables documentation](http://www.pytables.org/cookbook/threading.html) says that both reading and writing concurrent operations can be problematic, but [Pandas documentation](https://pandas.pydata.org/pandas-docs/stable/io.html#caveats) warns only about concurrent writes.

Is it possible to fix the documentation? Thanks a lot.