Fix error in README

README.md

@@ -166,9 +166,9 @@ Note that using `--rerun-fails` may require the use of other flags, depending on
 how you specify args to `go test`:
 
 * when used with `--raw-command` the re-run will pass additional arguments to
-  the command. The first arg is the name of a go package, and the second is a
-  `-run` flag with a regex that matches all the failed tests in that
-  package. These additional args can be passed to `go test`, or a test binary.
+  the command. The first arg is a `-run` flag with a regex that matches the test to re-run,
+  and second is the name of a go package. These additional args can be passed to `go test`,
+  or a test binary.
 * when used with any `go test` args (anything after `--` on the command line), the list of
   packages to test must be specified as a space separated list using the `--packages` arg.