def-advice!->defadvice! & conform to new advice conventions

This commit does two things:

- Renames def-advice! to defadvice!, in the spirit of naming convenience
  macros after the function/macro they enhance or replace.
- Correct the names of advice functions to indicate visibility and
  intent. A public advice function like doom-set-jump-a is meant to be
  used elsewhere. A private one like +dired--cleanup-header-line-a
  shouldn't -- it likely won't work anywhere but the function(s) it was
  made to advise.

modules/email/mu4e/config.el

@@ -88,9 +88,8 @@
                    (let ((maildir (mu4e-message-field msg :maildir)))
                      (format "%s" (substring maildir 1 (string-match-p "/" maildir 1)))))))
 
-  ;; Refresh the current view after marks are executed
-  (def-advice! +mu4e-refresh-a (&rest _) :after #'mu4e-mark-execute-all
-    (mu4e-headers-rerun-search))
+  (defadvice! +mu4e--refresh-current-view-a (&rest _)
+    :after #'mu4e-mark-execute-all (mu4e-headers-rerun-search))
 
   (when (featurep! :tools flyspell)
     (add-hook 'mu4e-compose-mode-hook #'flyspell-mode))