pinwheel: Fix embark key binding in emacs

hosts/pinwheel/modules/emacs/config.org

@@ -334,8 +334,8 @@ https://github.com/justbur/emacs-which-key
 #+BEGIN_SRC emacs-lisp
 (use-package embark
   :bind
-  (("C-S-a" . embark-act)         ;; pick some comfortable binding
+  (("C-A" . embark-act)
-   ("C-h B" . embark-bindings)) ;; alternative for `describe-bindings'
+   ("C-h B" . embark-bindings))
 
   :init
   ;; Optionally replace the key help with a completing-read interface