Correct the packages alphabetical order

core/prelude-packages.el

@@ -44,9 +44,9 @@
   '(ace-jump-mode ack-and-a-half dash diminish elisp-slime-nav
     expand-region flycheck gist
     git-commit-mode gitconfig-mode gitignore-mode
-    guru-mode helm helm-projectile
-    key-chord magit melpa smex ido-ubiquitous
-    rainbow-mode solarized-theme undo-tree
+    guru-mode helm helm-projectile ido-ubiquitous
+    key-chord magit melpa rainbow-mode
+    smex solarized-theme undo-tree
     volatile-highlights yasnippet zenburn-theme)
   "A list of packages to ensure are installed at launch.")