O-rings recommendations movement from Guidelines to Regulations (#855)

* Update wca-guidelines.md

* Update wca-regulations.md

* Update wca-regulations.md

* Update wca-regulations.md

* Update wca-regulations.md

Co-Authored-By: Lucas Garron <lgarron@worldcubeassociation.org>

wca-guidelines.md

@@ -119,7 +119,6 @@ To be more informative, each Guideline is classified using one of the following
 
 - 7d+) [ADDITION] The temperature of the competition area should be 21 to 25 degrees Celsius.
 - 7f1a+) [CLARIFICATION] A full-size mat should have minimum dimensions of 30cm (left to right) by 25cm (front to back).
-- 7f1a++) [ADDITION] Organizers should strongly consider modifications to make Stackmat timers more robust against common incidents, such as making the buttons more difficult to press by accident (e.g. by attaching O-rings around the buttons) and securing the battery more firmly (e.g. by padding the battery compartment).
 - 7h2+) [ADDITION] Competitors in a Competitors Area who are waiting between attempts should not be able to see the puzzles of the competitors on stage.
 
 

wca-regulations.md

@@ -203,6 +203,7 @@ Note: Because Article and Regulation numbers are not reassigned when Regulations
         - 7f1d) Surface: The flat surface on which the Stackmat has been placed. The mat is considered a part of the surface. The timer is not considered a part of the surface.
     - 7f2) The Stackmat timer must be attached to the mat and placed on the surface, with the timer on the side of the mat nearest to the competitor.
         - 7f2a) Exception: For 3x3x3 With Feet, the Stackmat must be placed directly on the floor. The timer device may be placed on the side of the mat farthest from the competitor.
+    - 7f3) The organization team should modify Stackmat timers to be more robust against common incidents, by making the buttons more difficult to press by accident (e.g. by attaching O-rings around the buttons) and securing the battery more firmly (e.g. by padding the battery compartment).
 - 7h) The competition area must have one or more Competitors Areas.
     - 7h1) The organization team may require that a competitor who has been called to compete must remain within their assigned Competitors Area until the competitor has finished all attempts for the round.