Swap to use dev command vs server so all servers boot

Author: afomera

lib/hanami/cli/commands/gem/new.rb

@@ -191,7 +191,7 @@ def call(
                   out.puts ""
                   out.puts Formatter.dim("Next steps:")
                   out.puts Formatter.dim("  cd #{app}")
-                  out.puts Formatter.dim("  bundle exec hanami server")
+                  out.puts Formatter.dim("  bundle exec hanami dev")
                 end
               end
             end