Update download.md to point at release 6.1.1

Author: smk78

download.md

@@ -12,7 +12,7 @@ _(Mac Users: Please ensure you have the [Xcode](https://en.wikipedia.org/wiki/Xc
 
  We recommend that you avoid using installation folder paths which contain spaces, non-Latin characters or characters not available on a standard keyboard.
 
-- [Current release version of SasView 6.x](https://github.com/SasView/sasview/releases/tag/v6.1.0 "SasView download")
+- [Current release version of SasView 6.x](https://github.com/SasView/sasview/releases/tag/v6.1.1 "SasView download")
 - [Current release version of SasView 5.x](https://github.com/SasView/sasview/releases/tag/v5.0.6 "SasView download")
 
 **Previous versions:**