JabRef#8491 : Change changelog message and update method description

CHANGELOG.md

@@ -52,7 +52,7 @@ Note that this project **does not** adhere to [Semantic Versioning](http://semve
 - We moved the search box in preview preferences closer to the available citation styles list. [#8370](https://github.com/JabRef/jabref/pull/8370)
 - Changing the preference to show the preview panel as a separate tab now has effect without restarting JabRef. [#8370](https://github.com/JabRef/jabref/pull/8370)
 - We enabled switching themes in JabRef without the need to restart JabRef. [#7335](https://github.com/JabRef/jabref/pull/7335)
-- We added support for Day Field during XMP (DCSchema) -> BibTex Conversion
+- We added support for the field `day`, `rights`, `coverage` and `language` when reading XMP data in Dublin Core format[#8491](https://github.com/JabRef/jabref/issues/8491)
 
 ### Fixed
 

src/main/java/org/jabref/logic/xmp/DublinCoreExtractor.java

@@ -74,12 +74,7 @@ private void extractAuthor() {
     }
 
     /**
-     * Year in BibTex - Date in DublinCore is only the year information, because dc interprets empty months as January.
-     * Tries to extract the month as well. In JabRef the bibtex/month/value is prioritized. <br/> The problem is the
-     * default value of the calendar, which is always January, also if there is no month information in the xmp metdata.
-     * The idea is, to reject all information with YYYY-01-01. In cases, where xmp is written with JabRef the month
-     * property filled with jan will override this behavior and no data is lost. In the cases, where xmp is written by
-     * another service, the assumption is, that the 1st January is not a publication date at all.
+     * Bibtex-Fields : year, [month], [day] - 'dc:date' in DublinCore
      */
     private void extractDate() {
         List<String> dates = dcSchema.getUnqualifiedSequenceValueList("date");