chore: ensure examples have busybox compat shebangs

Author: ms-jpq

examples/advanced_streaming.rb

@@ -1,4 +1,4 @@
-#!/usr/bin/env -S -- ruby
+#!/usr/bin/env ruby
 # frozen_string_literal: true
 # typed: strong
 

examples/demo.rb

@@ -1,4 +1,4 @@
-#!/usr/bin/env -S -- ruby
+#!/usr/bin/env ruby
 # frozen_string_literal: true
 # typed: strong
 

examples/demo_sorbet.rb

@@ -1,4 +1,4 @@
-#!/usr/bin/env -S -- ruby
+#!/usr/bin/env ruby
 # frozen_string_literal: true
 # typed: strong
 

examples/picture.rb

@@ -1,4 +1,4 @@
-#!/usr/bin/env -S -- ruby
+#!/usr/bin/env ruby
 # frozen_string_literal: true
 # typed: strong
 

examples/streaming.rb

@@ -1,4 +1,4 @@
-#!/usr/bin/env -S -- ruby
+#!/usr/bin/env ruby
 # frozen_string_literal: true
 # typed: strong