fix(markdown): disable meta keybinds if evil-disable-insert-state-bindings

While I don't intend to respect `evil-disable-insert-state-bindings`
everywhere, exhaustively (such as org's rebinding of return or tab), I
will do it for non-essential keybinds that have a high likeliness of
overwriting navigation commands (like meta keys).

modules/lang/markdown/config.el

@@ -134,11 +134,12 @@ capture, the end position, and the output buffer.")
   (map! :map evil-markdown-mode-map
         :n "TAB" #'markdown-cycle
         :n [backtab] #'markdown-shifttab
+        (:unless evil-disable-insert-state-bindings
           :i "M-*" #'markdown-insert-list-item
           :i "M-b" #'markdown-insert-bold
           :i "M-i" #'markdown-insert-italic
           :i "M-`" #'+markdown/insert-del
-        :i "M--" #'markdown-insert-hr
+          :i "M--" #'markdown-insert-hr)
         :n "M-r" #'browse-url-of-file
         :m "]h"  #'markdown-next-visible-heading
         :m "[h"  #'markdown-previous-visible-heading