Server Log: Errors relating to metadata block caused by character in properties file

There are a some cases of character issues in metadata block .properties files that cause verbose logging errors. This issue is about two things: 1. fixing the specific character issues in the .properties files and 2. improving the doc to note the character issue, to use the form key= rather than key: per this discussion between @pdurbin and a community member:

https://groups.google.com/g/dataverse-community/c/ynwdA2A4lYw/m/0rOvouG5AgAJ

Metadatablocks with these issues and associated warnings: MRA and GSD:
MRA Warning/error in logs:
Payara 5.2021.5] [WARNING] [] [edu.harvard.iq.dataverse.ControlledVocabularyVal
ue] [tid: _ThreadID=314 _ThreadName=http-thread-pool::jk-connector(15)] [timeMillis: 1644991231432] [levelValue
: 900] [[
Error findingcontrolledvocabulary.mraCollection.diversity_samples:_race,_ethnicity,_sexual_orientation,_relig
ion in defaultLang : Can't find resource for bundle java.util.PropertyResourceBundle, key controlledvocabulary.
mraCollection.diversity_samples:_race,_ethnicity,_sexual_orientation,_religion]]

From @pdurbin (thanks!)
Open an issue, perhaps. Here's the line to remove the colon from: https://github.com/IQSS/dataverse/blob/v5.9/src/main/java/propertyFiles/customMRA.properties#L6
customMRA.properties
controlledvocabulary.mraCollection.diversity_samples:_race,_ethnicity,_sexual_orientation,_religion=Diversity samples: Race, Ethnicity, Sexual Orientation, Religion

GSD:

[2022-02-22T19:10:06.415+0000] [Payara 5.2021.5] [WARNING] [] [edu.harvard.iq.dataverse.ControlledVocabularyValue] [tid: _ThreadID=94 _ThreadName=http-thread-pool::jk-connector(3)] [timeMillis: 1645557006415] [levelValue: 900] [[
Error findingcontrolledvocabulary.gsdCourseName.01101:_first_semester_core:_project in defaultLang : Can't find resource for bundle java.util.PropertyResourceBundle, key controlledvocabulary.gsdCourseName.01101:_first_semester_core:_project]]

[2022-02-22T19:10:06.415+0000] [Payara 5.2021.5] [WARNING] [] [edu.harvard.iq.dataverse.ControlledVocabularyValue] [tid: _ThreadID=94 _ThreadName=http-thread-pool::jk-connector(3)] [timeMillis: 1645557006415] [levelValue: 900] [[
Error findingcontrolledvocabulary.gsdCourseName.01102:_second_semester_core:_situate in defaultLang : Can't find resource for bundle java.util.PropertyResourceBundle, key controlledvocabulary.gsdCourseName.01102:_second_semester_core:_situate]]

etc, for each course name

When do they occur, how to reproduce?

1. language does not need to be enabled, default config is fine
2. have mra and gsd blocks configured and enabled on a dataverse, either root or a sub dv
3. create a dataset
4. edit dataset metadata, this will kick off all the .properties files errors.

Start with src/main/java/propertyFiles/customMRA.properties, especially the line linked in the issue, and inspect the corresponding GSD metadata properties entries. Reproduce by enabling the MRA and GSD blocks, creating a dataset, and editing its metadata; done means the reported warnings are gone and documentation notes the character and key=value requirements.