Dimensions should be printed as nrows x ncols

The header is :
```# Data frame like object (class data.frame) 1 x 3: ```

But was the intention this?
```# Data frame ... 3 x 1: ```

Example:

``` r
colorDF::print_colorDF(data.frame(oops = c(1:3)), tibble_style = TRUE)
#> # Data frame like object (class data.frame) 1 x 3: 
#>  │oops 
#>  │<int>
#> 1│    1
#> 2│    2
#> 3│    3
```
