[Fix #1151] Bind counsel-ag to "C-c a"

modules/prelude-ivy.el

@@ -61,7 +61,7 @@
 (global-set-key (kbd "<f2> u") 'counsel-unicode-char)
 (global-set-key (kbd "C-c g") 'counsel-git)
 (global-set-key (kbd "C-c j") 'counsel-git-grep)
-(global-set-key (kbd "C-c k") 'counsel-ag)
+(global-set-key (kbd "C-c a") 'counsel-ag)
 (global-set-key (kbd "C-x l") 'counsel-locate)
 (define-key minibuffer-local-map (kbd "C-r") 'counsel-minibuffer-history)