docs: safeguard examples

Author: maelle

R/commit.R

@@ -27,7 +27,7 @@
 #' * `git_log()`: A data frame with one row per commit
 #' * `git_commit()`, `git_commit_all()`: A SHA
 #' @useDynLib gert R_git_commit_create
-#' @examples
+#' @examplesIf interactive()
 #' oldwd <- getwd()
 #' repo <- file.path(tempdir(), "myrepo")
 #' git_init(repo)