Several pages have minor typographical errors to correct.

http://hl7.org/implement/standards/fhir/us/davinci-hrex/2019Jun/index.html
and third-party applications were appropriate
SHOULD BE
and third-party applications where appropriate

http://hl7.org/implement/standards/fhir/us/davinci-hrex/2019Jun/Introduction.html
and third-party applications were appropriate
SHOULD BE
and third-party applications where appropriate

http://hl7.org/implement/standards/fhir/us/davinci-hrex/2019Jun/C-CDA_on_FHIR_(FHIR_R4).html
to guide the patients care
SHOULD BE
to guide the patient's care

information about the patients consent
SHOULD BE
information about the patient's consent

http://hl7.org/implement/standards/fhir/us/davinci-hrex/2019Jun/StructureDefinition-hrex-practitionerrole.html
Requires HRexPractitioner and HRexPractitionerRole.
SHOULD BE
Requires HRexPractitioner and HRexOrganization.

http://hl7.org/implement/standards/fhir/us/davinci-hrex/2019Jun/StructureDefinition-hrex-provenance.html
The HRex Provenance resource requires occurance (period or dateTime)
SHOULD BE
The HRex Provenance resource requires occurred[x](period or dateTime)