Update instance.go
typo fix
@@ -18,7 +18,7 @@ type Instance struct {
// NewInstance creates a new instance for the current browser.
//
// The login process is repeated only once for a browser, and the created
-// isolated browser instance is used for entire navigation ony be one.
+// isolated browser instance is used for entire navigation one by one.
//
// Users can also choose to run the login->actions process again
// which uses a new incognito browser instance to run actions.
