Update src/content/deadlines/02_mentorship.md

Co-authored-by: Hugo van Kemenade <1324225+hugovk@users.noreply.github.com>

Author: ashiorkornortey

src/content/deadlines/02_mentorship.md

@@ -8,4 +8,4 @@ disabled: true
 
 Join our Speaker Orientation to build confidence, improve stage presence, and
 learn how to engage your audience. It is happening on 3 June 2026 18:00 CEST
-Online and is open to first time and returning speakers.
+online and is open to first-time and returning speakers.