Fixing link to PA website in README

Was linking to an old URL

README.md

@@ -374,4 +374,4 @@ Oh My Zsh is released under the [MIT license](LICENSE.txt).
 
 ![Planet Argon](https://pa-github-assets.s3.amazonaws.com/PARGON_logo_digital_COL-small.jpg)
 
-Oh My Zsh was started by the team at [Planet Argon](https://www.planetargon.com/?utm_source=github), a [Ruby on Rails development agency](https://www.planetargon.com/skills/ruby-on-rails-development?utm_source=github). Check out our [other open source projects](https://www.planetargon.com/open-source?utm_source=github).
+Oh My Zsh was started by the team at [Planet Argon](https://www.planetargon.com/?utm_source=github), a [Ruby on Rails development agency](http://www.planetargon.com/services/ruby-on-rails-development?utm_source=github). Check out our [other open source projects](https://www.planetargon.com/open-source?utm_source=github).