Vignette count incorrect when counting vignettes on CRAN remote

[thisisnic]

The package SHELF is reported as having 10 vignettes, when actually it has 2: see https://cran.r-project.org/web/packages/SHELF/index.html

This is due to how everything in the vignettes directory is being interpreted as a unique vignette.

library(riskmetric)

# I think this one doesn't work as I don't have it configured properly on my network
shelf_ref_default <- pkg_ref("SHELF", source = "pkg_cran_remote")
shelf_ref_default$vignettes
#> NULL

shelf_ref_rstudio <- pkg_ref("SHELF", source = "pkg_cran_remote", repos = "https://cran.rstudio.com")
shelf_ref_rstudio$vignettes
#> No encoding supplied: defaulting to UTF-8.
#> No encoding supplied: defaulting to UTF-8.
#>                                                              Dirichlet-elicitation 
#> "https://cran.rstudio.com/web/packages/SHELF/vignettes/Dirichlet-elicitation.html" 
#>                                                              Dirichlet-elicitation 
#>  "https://cran.rstudio.com/web/packages/SHELF/vignettes/Dirichlet-elicitation.Rmd" 
#>                                                               plain; charset=utf-8 
#>            "https://cran.rstudio.com/web/packages/SHELF/text/plain; charset=utf-8" 
#>                                                              Dirichlet-elicitation 
#>    "https://cran.rstudio.com/web/packages/SHELF/vignettes/Dirichlet-elicitation.R" 
#>                                                               plain; charset=utf-8 
#>            "https://cran.rstudio.com/web/packages/SHELF/text/plain; charset=utf-8" 
#>                                                                     SHELF-overview 
#>        "https://cran.rstudio.com/web/packages/SHELF/vignettes/SHELF-overview.html" 
#>                                                                     SHELF-overview 
#>         "https://cran.rstudio.com/web/packages/SHELF/vignettes/SHELF-overview.Rmd" 
#>                                                               plain; charset=utf-8 
#>            "https://cran.rstudio.com/web/packages/SHELF/text/plain; charset=utf-8" 
#>                                                                     SHELF-overview 
#>           "https://cran.rstudio.com/web/packages/SHELF/vignettes/SHELF-overview.R" 
#>                                                               plain; charset=utf-8 
#>            "https://cran.rstudio.com/web/packages/SHELF/text/plain; charset=utf-8"