try adding vignettes for coverage check

.github/workflows/test-coverage.yaml

@@ -31,6 +31,7 @@ jobs:
           covr::codecov(
             quiet = FALSE,
             clean = FALSE,
+	    type = "all",
             install_path = file.path(normalizePath(Sys.getenv("RUNNER_TEMP"), winslash = "/"), "package")
           )
         shell: Rscript {0}