fix(11): minor grammar/typo fixes
fix(11): minor grammar/typo fixes

rlewis1988/logic_and_proof,fpvandoorn/logic_and_proof,rlewis1988/logic_and_proof,fpvandoorn/logic_and_proof,rlewis1988/logic_and_proof,leanprover/logic_and_proof,avigad/logic_and_proof,avigad/logic_and_proof,soonhokong/logic_and_proof,leanprover/logic_and_proof,fpvandoorn/logic_and_proof,soonhokong/logic_and_proof,avigad/logic_and_proof,soonhokong/logic_and_proof,leanprover/logic_and_proof