Readme Link for ODBC driver doesn't contain 64bit windows download

[CameronFiederer]

Hey there,

Was trying to walk through the readme, and clicked on the link for the ODBC driver. For some reason, there's no 64 bit driver for Windows. I tried using the 32 bit one, which didn't appear to work. After a google search, I landed on https://developers.snowflake.com/odbc/ which did get me the 64 bit driver, and I appear to be properly connected now. I would have opened a PR, but not sure exactly how the readme should be updated, as the current link seems to provide more potential choices for non-windows than the link I used.