revised docs for netgeo section

Author: jakewmeyer

README.md

@@ -39,7 +39,7 @@ export APIXU_API_KEY=key
 CLI utility for returning LAN, WAN, Router, and DNS IP's, as well as Geodata on current or specific IP's. Outputs clean results to make all your piping dreams come true. | :+1: |
 
 Netgeo is available as a separate gem [here](https://rubygems.org/gems/netgeo)
-```bash
+```ruby
 gem install netgeo
 ```