fixed label

.gitlab/issue_templates/Proposal.md

@@ -57,4 +57,4 @@ Artworks must be installed on **Friday October 19th, 2018**.
 
 [If you wish, link us to anything else relevant to your work, like slide decks, code samples, videos, etc.]
 
-/label ~"Radnets2018"
+/label ~"radnets2018"