[osis-core] OSIS Candidate.1.1.001 - 2 regex for osisWorkType

[Todd Tillinghast]

Correct
<xs:pattern value="((\p{L} | \p{N} | _)*(\.(\p{L} | \p{N} | _))*)?"/>
Current
<xs:pattern value="((\p{L} | \p{N} | _)*(\.(\p{L} | \p{N} | _)*)?"/>

Todd