Use HTTPS for Gem badge.

Author: majjoha

README.md

@@ -1,6 +1,6 @@
 # Create Ruby App
 ![CI](https://github.com/majjoha/create-ruby-app/workflows/CI/badge.svg)
-[![Gem Version](https://badge.fury.io/rb/create-ruby-app.svg)](http://badge.fury.io/rb/create-ruby-app)
+[![Gem Version](https://badge.fury.io/rb/create-ruby-app.svg)](https://badge.fury.io/rb/create-ruby-app)
 
 `create-ruby-app` is an opinionated tool for scaffolding Ruby applications
 effortlessly inspired by [Create React