Fix failing test

[mrustl]

https://github.com/KWB-R/kwb.fakin/runs/6801722201?check_suite_focus=true#step:8:14

Run covr::codecov()
Error: Error: Failure in `/private/var/folders/24/8k48jl6d249_n_qfxwsl6xvm0000gn/T/RtmpTiAi93/R_LIBS12b26bd77576/kwb.fakin/kwb.fakin-tests/testthat.Rout.fail`
Backtrace:
    ▆
 1. ├─testthat::expect_identical(f(repo, "DESCRIPTION"), "DESCRIPTION") at test-function-github_package_files.R:12:2
 2. │ └─testthat::quasi_label(enquo(object), label, arg = "object")
 3. │   └─rlang::eval_bare(expr, quo_get_env(quo))
 4. └─kwb.fakin f(repo, "DESCRIPTION")
 5.   ├─base::paste(readLines(url, warn = FALSE), collapse = "")
 6.   └─base::readLines(url, warn = FALSE)
 7.     └─base::file(con, "r")
[ FAIL 1 | WARN 3 | SKIP 0 | PASS 219 ]