frameit: fix bug in /scroll/list

...http..mathhub.info/FrameIT/frameworld/$Angle$Sum.omdoc.xz

.../http..mathhub.info/FrameIT/frameworld/$Midpoint.omdoc.xz

...p..mathhub.info/FrameIT/frameworld/$Opposite$Len.omdoc.xz

...ub.info/FrameIT/frameworld/$Supplementary$Angles.omdoc.xz

...eIT/frameworld/$Triangle$Scroll_$General$Problem.omdoc.xz

...rameworld/$Triangle$Scroll_$Right$Angled$Problem.omdoc.xz

errors/mmt-omdoc/Scrolls/MiscScrolls.mmt.err

errors/mmt-omdoc/Scrolls/TriangleScrolls.mmt.err

narration/Scrolls/MiscScrolls.omdoc

narration/Scrolls/SupplementaryAngles.omdoc

narration/Scrolls/TriangleScrolls.omdoc

relational/Scrolls/.rel