Protocol Content Errata

Important updates for developers about the Windows and SQL Protocols Documents

04/17: Errata added for [MC-DTCXA]: MSDTC Connection Manager OleTx XA Protocol

In various sections, the upper-limit information for the lenDSN and lenXaDll fields was updated and a typo in a message name corrected: https://msdn.microsoft.com/en-us/library/mt786707.aspx