gophercon update description (#5630)

Author: Oh-KPond

README.md

@@ -3464,7 +3464,7 @@ _Where to discover new Go libraries._
 - [GoDays](https://www.godays.io/) - Berlin, Germany.
 - [GoLab](https://golab.io/) - Florence, Italy.
 - [GopherChina](https://gopherchina.org) - Shanghai, China.
-- [GopherCon](https://www.gophercon.com/) - Denver, USA.
+- [GopherCon](https://www.gophercon.com/) - Varied Locations Each Year, USA.
 - [GopherCon Australia](https://gophercon.com.au/) - Sydney, Australia.
 - [GopherCon Brazil](https://gopherconbr.org) - Florianópolis, Brazil.
 - [GopherCon Europe](https://gophercon.eu/) - Berlin, Germany.