Finalize ordering of packages

[arilamstein]

According to the methodology page the 10 most popular packages are:

#     package             annual_downloads percent
#     <chr>                          <dbl>   <dbl>
#   1 tigris                        727026      24
#   2 tidycensus                    526920      18
#   3 usdata                        265676       9
#   4 choroplethr                   199049       7
#   5 acs                           192425       6
#   6 ipumsr                        190174       6
#   7 censusapi                     139707       5
#   8 choroplethrMaps               133883       4
#   9 noncensus                      99437       3
#  10 totalcensus                    73907       2

But we list the packages in this order:

1. tigris
2. acs
3. choroplethr
4. tidycensus
5. choroplethrMaps
6. censusapi
7. ipumsr
8. usdata
9. cdlTools

I think we should consider listing the packages in the order of their popularity, as people tend to just scan lists and click the first link.