Change deprecated RSpec "should" to "expect"
Change deprecated RSpec "should" to "expect"

ScottKolo/suitesparse-matrix-collection-website,ScottKolo/suitesparse-matrix-collection-website,ScottKolo/UFSMC-Web,ScottKolo/suitesparse-matrix-collection-website,ScottKolo/UFSMC-Web,ScottKolo/UFSMC-Web,ScottKolo/suitesparse-matrix-collection-website,ScottKolo/suitesparse-matrix-collection-website