Allow colon : for symbols in binding of evil-ex-grammar

Author: Alexander-Shukaev

evil-ex.el

@@ -56,7 +56,7 @@
      number)
     (command #'evil-ex-parse-command)
     (binding
-     "[~&*@<>=:]+\\|[[:alpha:]_]+\\|!")
+     "[~&*@<>=:]+\\|[[:alpha:]_:]+\\|!"))
     (emacs-binding
      "[[:alpha:]-][[:alnum:][:punct:]-]+")
     (bang