Minor structured data fixes for smaht-submitr

[dmichaels-harvard]

• Minor structured_data fix related to counting unresolved references; not functionally consequential; only incorrect user feedback in smaht-submitr.

[coveralls]

Pull Request Test Coverage Report for Build 8280116306

Details

• 3 of 3 (100.0%) changed or added relevant lines in 1 file are covered.
• 1 unchanged line in 1 file lost coverage.
• Overall coverage increased (+0.007%) to 77.168%

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Files with Coverage Reduction	New Missed Lines	%
dcicutils/structured_data.py	1	70.56%
<!--	Total:	1		-->

Totals
Change from base Build 8269652579:	0.007%
Covered Lines:	10849
Relevant Lines:	14059

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💛 - Coveralls