1-2.2 has a typo (minor)

in first paragraph [here](http://grasshopperprimer.com/en/1-foundations/1-2/2_grasshopper-component-parts.html):

> Components are the objects you place on the canvas and connect together with **Wiresto** form a visual program. Components can represent Rhino Geometry or **operationslike** Math Functions. Components have inputs and outputs.