Add CI badge

Author: jcs090218

README.org

@@ -3,6 +3,8 @@
 
 * Doom Dashboard
 
+[[https://github.com/emacs-dashboard/doom-dashboard/actions/workflows/test.ym][https://github.com/emacs-dashboard/doom-dashboard/actions/workflows/test.yml/badge.svg]]
+
 [[https://github.com/doomemacs/doomemacs/tree/master/modules/ui/doom-dashboard][Doom Dashboard]] for [[https://github.com/emacs-dashboard/emacs-dashboard][emacs-dashboard]]
 
 Dashboard extension for get a look similar to Doom Dashboard!