Don't use "internet connection" as the example here (#1729)

Now we have `skip_if_offline()` for that

Author: jennybc

R/skip.R

@@ -40,7 +40,7 @@
 #' @param host A string with a hostname to lookup
 #' @export
 #' @examples
-#' if (FALSE) skip("No internet connection")
+#' if (FALSE) skip("Some Important Requirement is not available")
 #'
 #' test_that("skip example", {
 #'   expect_equal(1, 1L)    # this expectation runs