Add documentation about starting iced with an alias in deps.edn

[bzhb]

The documentation in https://liquidz.github.io/vim-iced/#iced_command could mention how to start iced form an alias in deps.edn

The reason I have to do that is that my co-worker are launching our code with cider with a command such as clojure -M service1:service2:cidernrepl. Each of the service declares a -m main executable but because cider nREPL is last it is the one that will be launched. Doing iced repl -A service1:service2 won't work as it will launch service2 (that does not terminate) and never launch the REPL (also -A is deprecated in favor of -M).

So it could be useful to remind in the documentation that iced run --dryrun can display the launch command, and give an example of how to launch directly with an alias :

  :iced
  {:extra-deps {iced-repl/iced-repl
                {:local/root "../.vim/plugged/vim-iced"}
                nrepl/nrepl {:mvn/version "1.1.1"}
                refactor-nrepl/refactor-nrepl {:mvn/version "3.9.1"}
                cider/cider-nrepl {:mvn/version "0.45.0"}
                com.github.liquidz/iced-nrepl {:mvn/version "1.2.480"}}
   :main-opts ["-m" "nrepl.cmdline"
               "--middleware" "[cider.nrepl/wrap-classpath cider.nrepl/wrap-clojuredocs cider.nrepl/wrap-complete cider.nrepl/wrap-debug cider.nrepl/wrap-format cider.nrepl/wrap-info cider.nrepl/wrap-macroexpand cider.nrepl/wrap-ns cider.nrepl/wrap-out cider.nrepl/wrap-refresh cider.nrepl/wrap-stacktrace cider.nrepl/wrap-spec cider.nrepl/wrap-test cider.nrepl/wrap-trace cider.nrepl/wrap-undef cider.nrepl/wrap-xref refactor-nrepl.middleware/wrap-refactor iced.nrepl/wrap-iced]"]} ;!!

With this I can launch the same way as my co-workers with clojure -M service1:service2:iced