Use a valid example for PrimaryITInvestmentUII

[philipashlock]

This was originally brought up by @dsmorgan77 in the context of #91 but doesn't seem to have been ticketed or addressed.

There's a formal description of this format at http://www.whitehouse.gov/sites/default/files/omb/assets/egov_docs/fy14_guidance_on_exhibits_53_and_300.pdf so perhaps some of this could be incorporated as well.

As defined:

Unique Investment Identifier (UII) refers to a persistent numeric code applied to an investment that allows the identification and tracking of an investment across multiple FYs of an agency’s investment portfolio. The UII is composed of a three-digit agency code concatenated with a nine-digit unique investment number generated by the agency. Some nine-digit numbers are reserved for OMB to assign and may not be assigned by agencies, as controlled by the restrictions described in the section on “Variable Information.”

[dsmorgan77]

👍