Revert macros to ...! name convention (elisp doesn't like @...)

core/autoload/memoize.el

@@ -22,7 +22,7 @@
          (puthash args (apply ',func args) doom-memoized-table))))
 
 ;;;###autoload
-(defmacro @def-memoized (name arglist &rest body)
+(defmacro def-memoized! (name arglist &rest body)
   "Create a memoize'd function. NAME, ARGLIST, DOCSTRING and BODY
 have the same meaning as in `defun'."
   (declare (indent defun) (doc-string 3))

core/autoload/mplist.el

@@ -9,15 +9,15 @@
 ;; regular plists.
 ;;
 ;; (let ((a '(abc :commands 1 :config 3 4 5)))
-;;   (@mplist a &delete :commands :config))
+;;   (mplist! a &delete :commands :config))
 
 ;;;###autoload
-(defmacro @mplist (var action &rest args)
+(defmacro mplist! (var action &rest args)
   "A helper macro that makes dealing with doom-mplist-* functions a little more concise.
 
 Examples:
-  (@mplist plist &delete :x :y)
-  (@mplist plist &get :x)"
+  (mplist! plist &delete :x :y)
+  (mplist! plist &get :x)"
   (declare (indent defun))
   (let ((fn-sym (intern (format "doom-mplist-%s" (substring (symbol-name action) 1)))))
     (when (fboundp fn-sym)

core/autoload/packages.el

@@ -102,7 +102,7 @@ Used by `doom/packages-autoremove'."
 (defun doom-get-missing-packages ()
   "Return a list of requested packages that aren't installed or built-in. Each
 element is a list whose CAR is the package symbol, and whose CDR is a plist
-taken from that package's `@package' declaration.
+taken from that package's `package!' declaration.
 
 Used by `doom/packages-install'."
   (cl-remove-if (lambda (pkgsym)