Reword Rails's relationship to Ruby for accuracy

Author: hibachrach

topics/ruby/index.md

@@ -11,4 +11,4 @@ topic: ruby
 url: https://www.ruby-lang.org/en/
 wikipedia_url: https://en.wikipedia.org/wiki/Ruby_(programming_language)
 ---
-Ruby was developed by Yukihiro "Matz" Matsumoto in 1995 with the intent of having an easily readable programming language. It is integrated with the Rails framework to create dynamic web-applications. Ruby's syntax is similar to that of Perl and Python.
+Ruby was developed by Yukihiro "Matz" Matsumoto in 1995 with the intent of having an easily readable programming language. It is used by the Rails framework to create dynamic web-applications. Ruby's syntax is similar to that of Perl and Python.