use 'given' for corperations

Fixed `usethis::is_rstudio_pkg()` returning `NA`
because it only checked if `given == "RStudio"` for funders.

Furthermore, documentation on `?person` also
says that `given` is more appropriate than family:
> For persons which are not natural persons
> (e.g., institutions, companies, etc.)
> it is appropriate to use given (but not family) for the name,
> e.g., person("R Core Team", role = "aut").

Author: t-kalinowski

DESCRIPTION

@@ -8,8 +8,8 @@ Authors@R: c(
   person("Daniel", "Falbel", role = c("ctb", "cph"), email = "[email protected]"),
   person("JJ", "Allaire", role = c("aut", "cph")),
   person("François", "Chollet", role = c("aut", "cph")),
-  person(family = "RStudio", role = c("ctb", "cph", "fnd")),
-  person(family = "Google", role = c("ctb", "cph", "fnd")),
+  person("RStudio", role = c("ctb", "cph", "fnd")),
+  person("Google", role = c("ctb", "cph", "fnd")),
   person("Yuan", "Tang", role = c("ctb", "cph"),
          email = "[email protected]",
          comment = c(ORCID = "0000-0001-5243-233X")),