Update README.md

Author: gangelo

README.md

@@ -1,6 +1,6 @@
 [![Ruby](https://github.com/gangelo/immutable_struct_ex/actions/workflows/ruby.yml/badge.svg)](https://github.com/gangelo/immutable_struct_ex/actions/workflows/ruby.yml)
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-[![Gem Version](https://badge.fury.io/rb/immutable_struct_ex.svg?refresh=5)](https://badge.fury.io/rb/immutable_struct_ex)
+[![GitHub version](http://badge.fury.io/gh/gangelo%2Fimmutable_struct_ex.svg?refresh=6)](https://badge.fury.io/gh/gangelo%2Fimmutable_struct_ex)
+[![Gem Version](https://badge.fury.io/rb/immutable_struct_ex.svg?refresh=6)](https://badge.fury.io/rb/immutable_struct_ex)
 [![](http://ruby-gem-downloads-badge.herokuapp.com/immutable_struct_ex?type=total)](http://www.rubydoc.info/gems/immutable_struct_ex/)
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