DOC: changed the term `Vern` to `Versions` to be clearer
based on this SO question: http://stackoverflow.com/q/19438309/1301710

You need to either change the column widths or auto-detect (remove them); pls build the docs and see which works better
 @jreback I changed to "version" and updated "witdth". you can look at the result as github renders rst-files.
 @jreback 

Sorry that was not intended! Must have been a problem with github only editing (I should work more carefully).
I reopened the same pull request, but created a local branch and add the changes, see

https://github.com/pydata/pandas/pull/5277
