docs(events): fix spelling for colombia entry (#2131)

Author: lirantal

locale/en/get-involved/node-events.md

@@ -19,7 +19,7 @@ FORMAT
 
 |                     Event Name                     |        Location         |      Date      |
 | :------------------------------------------------: | :---------------------: | :------------: |
-| [NodeConf Colombia](https://colombia.nodeconf.com) |   Medellin, Columbia    |   June 21-22   |
+| [NodeConf Colombia](https://colombia.nodeconf.com) |   Medellin, Colombia    |   June 21-22   |
 |  [NodeConf EU](https://www.nodeconf.eu/2019.html)  | Lyrath Estate, Kilkenny | November 10-13 |
 |      [NodeSummit](https://www.nodesummit.com)      |      San Francisco      |      TBA       |
 |      [NodeUkraine](https://nodeukraine.org.ua)     |      Kyiv, Ukraine      |     May 18     |