Prevent Org from interpreting underscores as subscript

[alphapapa]

@phil-s showed this:

;; Prevent '_' and '^' from causing sub- and super-scripts in exported HTML.
(define-advice ement-room-send-org-filter (:around (orig-fun content room) my-export)
  "Tweak the org-mode export settings."
  (let ((org-export-with-sub-superscripts nil))
    (funcall orig-fun content room))) 

I should just set that variable directly.