stack-checker.errors: fix typo in summary.txt
stack-checker.errors: fix typo in summary.txt

mrjbq7/factor,mrjbq7/factor,tgunr/factor,mrjbq7/factor,tgunr/factor,tgunr/factor,factor/factor,mrjbq7/factor,tgunr/factor,mrjbq7/factor,mrjbq7/factor,factor/factor,factor/factor,tgunr/factor,tgunr/factor,factor/factor,factor/factor,factor/factor