statistics.hh: fix up some very ambiguous doxygen comments about Formulas
statistics.hh:
fix up some very ambiguous doxygen comments about Formulas

base/statistics.hh:
    fix up some very ambiguous comments about Formulas

--HG--
extra : convert_revision : ad8d9579fd1933397590c78111bec7c0d19b0e14

powerjg/gem5-ci-test,sobercoder/gem5,Weil0ng/gem5,samueldotj/TeeRISC-Simulator,yb-kim/gemV,HwisooSo/gemV-update,SanchayanMaity/gem5,KuroeKurose/gem5,TUD-OS/gem5-dtu,HwisooSo/gemV-update,samueldotj/TeeRISC-Simulator,austinharris/gem5-riscv,cancro7/gem5,austinharris/gem5-riscv,gem5/gem5,samueldotj/TeeRISC-Simulator,markoshorro/gem5,SanchayanMaity/gem5,kaiyuanl/gem5,briancoutinho0905/2dsampling,markoshorro/gem5,gedare/gem5,TUD-OS/gem5-dtu,zlfben/gem5,sobercoder/gem5,joerocklin/gem5,gedare/gem5,HwisooSo/gemV-update,markoshorro/gem5,rjschof/gem5,gem5/gem5,yb-kim/gemV,SanchayanMaity/gem5,samueldotj/TeeRISC-Simulator,sobercoder/gem5,rjschof/gem5,zlfben/gem5,KuroeKurose/gem5,joerocklin/gem5,cancro7/gem5,Weil0ng/gem5,SanchayanMaity/gem5,briancoutinho0905/2dsampling,qizenguf/MLC-STT,aclifton/cpeg853-gem5,HwisooSo/gemV-update,powerjg/gem5-ci-test,rjschof/gem5,rallylee/gem5,rjschof/gem5,KuroeKurose/gem5,HwisooSo/gemV-update,briancoutinho0905/2dsampling,sobercoder/gem5,austinharris/gem5-riscv,rallylee/gem5,yb-kim/gemV,powerjg/gem5-ci-test,aclifton/cpeg853-gem5,HwisooSo/gemV-update,TUD-OS/gem5-dtu,SanchayanMaity/gem5,TUD-OS/gem5-dtu,Weil0ng/gem5,cancro7/gem5,gem5/gem5,rjschof/gem5,rallylee/gem5,rallylee/gem5,briancoutinho0905/2dsampling,kaiyuanl/gem5,KuroeKurose/gem5,briancoutinho0905/2dsampling,kaiyuanl/gem5,markoshorro/gem5,SanchayanMaity/gem5,kaiyuanl/gem5,qizenguf/MLC-STT,briancoutinho0905/2dsampling,kaiyuanl/gem5,gem5/gem5,austinharris/gem5-riscv,Weil0ng/gem5,HwisooSo/gemV-update,Weil0ng/gem5,rjschof/gem5,SanchayanMaity/gem5,powerjg/gem5-ci-test,cancro7/gem5,joerocklin/gem5,aclifton/cpeg853-gem5,qizenguf/MLC-STT,gem5/gem5,aclifton/cpeg853-gem5,zlfben/gem5,qizenguf/MLC-STT,zlfben/gem5,austinharris/gem5-riscv,aclifton/cpeg853-gem5,cancro7/gem5,kaiyuanl/gem5,gedare/gem5,qizenguf/MLC-STT,zlfben/gem5,joerocklin/gem5,powerjg/gem5-ci-test,rallylee/gem5,powerjg/gem5-ci-test,yb-kim/gemV,KuroeKurose/gem5,cancro7/gem5,sobercoder/gem5,KuroeKurose/gem5,joerocklin/gem5,austinharris/gem5-riscv,joerocklin/gem5,gem5/gem5,kaiyuanl/gem5,Weil0ng/gem5,qizenguf/MLC-STT,zlfben/gem5,gedare/gem5,KuroeKurose/gem5,gedare/gem5,yb-kim/gemV,rallylee/gem5,rallylee/gem5,samueldotj/TeeRISC-Simulator,joerocklin/gem5,samueldotj/TeeRISC-Simulator,samueldotj/TeeRISC-Simulator,TUD-OS/gem5-dtu,aclifton/cpeg853-gem5,markoshorro/gem5,powerjg/gem5-ci-test,qizenguf/MLC-STT,gem5/gem5,yb-kim/gemV,markoshorro/gem5,gedare/gem5,yb-kim/gemV,gedare/gem5,Weil0ng/gem5,cancro7/gem5,TUD-OS/gem5-dtu,aclifton/cpeg853-gem5,austinharris/gem5-riscv,TUD-OS/gem5-dtu,joerocklin/gem5,briancoutinho0905/2dsampling,sobercoder/gem5,markoshorro/gem5,zlfben/gem5,sobercoder/gem5,rjschof/gem5,yb-kim/gemV