docs(guides): remove (Latest) from menu name

docs/sources/guides/whats-new-in-v4.md

@@ -4,7 +4,7 @@ description = "Feature & improvement highlights for Grafana v4.0"
 keywords = ["grafana", "new", "documentation", "4.0"]
 type = "docs"
 [menu.docs]
-name = "Version 4.0 (Latest)"
+name = "Version 4.0"
 identifier = "v4.0"
 parent = "whatsnew"
 weight = -1