Fix typo

R/req-error.R

@@ -49,7 +49,7 @@
 #' @inheritParams req_perform
 #' @param is_error A predicate function that takes a single argument (the
 #'   response) and returns `TRUE` or `FALSE` indicating whether or not an
-#'   R error should signalled.
+#'   R error should be signalled.
 #' @param body A callback function that takes a single argument (the response)
 #'   and returns a character vector of additional information to include in the
 #'   body of the error. This vector is passed along to the `message` argument