Fix tab reference to the developer meetings page

Signed-off-by: Damien L-G <[email protected]>

Author: dalg24

config/_default/config.toml

@@ -211,7 +211,7 @@ weight = 8
 [[languages.en.menu.main]]
 identifier = "dev-meetings"
 name = "Developer Meetings"
-url = "developer-meetings"
+url = "/developer-meetings/"
 parent = "Community"
 weight = 9