Fix typos in the metadata schema that require an XSL converter for the new version #715
Description
two typos are reported in issue #652
More typos:
- conformanceToStandardsBestPractices: change the value "BLM" to "BML"
- conformanceToClassificationScheme: change the value "libraryOfCongress_domainClassification " to "libraryOfCongressDomain_classification"
- conformanceToClassificationScheme: change the value "libraryOfCongressSubjectHeadings_classification" to "LCSH_classification"