Revert go.mod for v1.
diff --git a/go.mod b/go.mod
index 14948d3..7731235 100644
--- a/go.mod
+++ b/go.mod
@@ -1,3 +1,3 @@
-module github.com/creack/pty/v2
+module github.com/creack/pty
 
-go 1.18
+go 1.13