Improve code comment.

lib/cli/commands/account.js

@@ -445,7 +445,7 @@ exports.init = function (cli) {
     }
 
     // Check if there is a value for Subscription (caps) and
-    // if so fix-up to all lower case
+    // if so fix-up by deleting it
     if (cfg.Subscription) {
       delete cfg.Subscription;