Update adlink_ipi_arm.md

[cRaErBs]

Little corrections/ extensions from reading through it.

[tingleby]

Hi @cRaErBs

Before your contribution can be accepted by the project, you need to create and 
electronically sign the Eclipse Contributor Agreement (ECA) and sign 
off on the Eclipse Foundation Certificate of Origin. 

For more information, please visit

http://wiki.eclipse.org/Development_Resources/Contributing_via_Git