The Change Log table at the bottom of an event page documents the changes made to a hook's specification. Formatting changes aren't substantive enough to document in the change log. Only breaking changes should update the major version. 

Please revert any new versions that document changes made to the html content of the page, but not to the hook spec and make major versions into minor for non-breaking changes.  

E.g. https://build.fhir.org/ig/HL7/fhircast-docs/3-4-2-Encounter-close.html version 2 is non-breaking, I think (I hope). Definitely a corrected example is not a change to the hook specification that should be recorded in the change log.