minor: cannot add alias with . in run configurations

[timothypratley]

Edit a REPL configuration.

Try to add a deps alias `:compiler.test.run`

Observe that this is disallowed.

An example project that uses such is ClojureScript: https://github.com/clojure/clojurescript/blob/master/deps.edn

Not a big deal but would be nice to allow the dots!