html_getTable() isn't processing headers

[jonathancallahan]

Reproducible example:

> url <- "https://www.patriotsoftware.com/blog/accounting/average-cost-living-by-state/"
> df <- MazamaCoreUtils::html_getTable(url)
> head(df)
          X1                                 X2                  X3                X4
1      State Annual Mean Wage (All Occupations) Median Monthly Rent Value of a Dollar
2    Alabama                            $44,930                $998             $1.15
3     Alaska                            $59,290              $1,748             $0.95
4    Arizona                            $50,930              $1,356             $1.04
5   Arkansas                            $42,690                $953             $1.15
6 California                            $61,290              $2,518             $0.87