Remove stray StringRiffle in fornberg.wl
Remove stray StringRiffle in fornberg.wl

pleroy/Principia,pleroy/Principia,mockingbirdnest/Principia,pleroy/Principia,mockingbirdnest/Principia,mockingbirdnest/Principia,pleroy/Principia,mockingbirdnest/Principia