use_codecov_badge() URL seems incorrect now

[DavisVaughan]

i.e. here

usethis/R/coverage.R

Line 48 in da18e11

url <- glue("https://app.codecov.io/gh/{repo_spec}?branch={default_branch}")

It generates a link like this:

https://app.codecov.io/gh/tidyverse/tidyr?branch=main

but if you go to that, it will still show master. It does not seem to know how to handle ?branch=main and just ignores it, and then shows what it thinks is the default branch, which is master unless you've changed it in the codecov settings.

It seems like this might be a more correct link?

https://app.codecov.io/gh/tidyverse/tidyr/tree/main

That shows main for me

[DavisVaughan]

Ideally we'd just remove the branch piece entirely and show https://app.codecov.io/gh/tidyverse/tidyr, but since codecov doesn't automatically pick up git default branch changes, that is likely going to show master for all our repos until we go and change the setting on codecov.io too

[gaborcsardi]

Just changed the default branches to main in tidyverse. Hopefully new repos will default to main since that's the default branch on GH.