docs: links and instructions in README

Author: ProGM

README.md

@@ -5,7 +5,7 @@
 Add the Gem into your Gemfile
 
 ```ruby
-gem 'underscorize_params', github: 'monade/underscorize_params'
+gem 'underscorize_params'
 ```
 
 This gem allows you to send params to a Controller's action in camel case.
@@ -67,8 +67,8 @@ The gem is available as open source under the terms of the [MIT License](https:/
 About Monade
 ----------------
 
-![monade](https://monade.io/wp-content/uploads/2021/06/monadelogo.png)
+![monade](https://monade.io/wp-content/uploads/2023/02/logo-monade.svg)
 
-underscorize_params is maintained by [mònade srl](https://monade.io/en/home-en/).
+underscorize_params is maintained by [mònade srl](https://monade.io).
 
-We <3 open source software. [Contact us](https://monade.io/en/contact-us/) for your next project!
+We <3 open source software. [Contact us](https://monade.io/studio/contatti/) for your next project!