faq on DOIs. Put "universal" DOI to template CITATION

also write this DOI to CITATION.cff

Author: dimpase

CITATION.cff

@@ -5,7 +5,7 @@ abstract: SageMath is a free open-source mathematics software system.
 authors:
 - name: "The SageMath Developers"
 version: 10.4.beta3
-doi: 10.5281/zenodo.593563
+doi: 10.5281/zenodo.8042260
 date-released: 2024-04-12
 repository-code: "https://github.com/sagemath/sage"
 url: "https://www.sagemath.org/"

CITATION.cff.in

@@ -5,7 +5,7 @@ abstract: SageMath is a free open-source mathematics software system.
 authors:
 - name: "The SageMath Developers"
 version: ${SAGE_VERSION}
-doi: 10.5281/zenodo.593563
+doi: 10.5281/zenodo.8042260
 date-released: ${SAGE_RELEASE_DATE}
 repository-code: "https://github.com/sagemath/sage"
 url: "https://www.sagemath.org/"

src/doc/en/faq/faq-general.rst

@@ -335,6 +335,9 @@ Here is a BibTeX entry for Sage:
 
 Adjust version/year as needed.  You might also like to use DOI for Sage,
 as the note entry in the above record, or directly as DOI record.
+The DOI 10.5281/zenodo.8042260 represents all Zenodo DOIs for Sage;
+clicking on :doi:`10.5281/zenodo.8042260` will show DOI for the latest
+Sage version, presently 10.3, see :doi:`10.5281/zenodo.10841614`.
 
 
 If you happen to use the Sage interface to PARI, GAP or Singular,