Refactor lengthy argument sections

This cleans up the old layout for the connection throttling sections of the Load Balancer guide.

**Old**

![screen shot 2014-05-27 at 2 54 54 pm](https://cloud.githubusercontent.com/assets/836375/3097531/fd044e32-e5df-11e3-8230-4306f6953032.png)

**New, Python**

![screen shot 2014-05-27 at 3 45 39 pm](https://cloud.githubusercontent.com/assets/836375/3097529/f7cc4ed8-e5df-11e3-8963-d9f8b0b27733.png)

**New, Ruby**

![screen shot 2014-05-27 at 3 47 04 pm](https://cloud.githubusercontent.com/assets/836375/3097544/168924cc-e5e0-11e3-8c07-3e2d5ef91461.png)

Ruby layout per @smashwilson. :gem: