CSAF 2.1

- update overlooked CSAF 2.0 to 2.1

csaf_2.1/prose/edit/src/frontmatter.md

@@ -55,7 +55,7 @@ This specification replaces or supersedes:
 
 
 #### Abstract:
-The Common Security Advisory Framework (CSAF) Version 2.0 is the definitive reference for the language which supports creation, update, and interoperable exchange of security advisories as structured information on products, vulnerabilities and the status of impact and remediation among interested parties.
+The Common Security Advisory Framework (CSAF) Version 2.1 is the definitive reference for the language which supports creation, update, and interoperable exchange of security advisories as structured information on products, vulnerabilities and the status of impact and remediation among interested parties.
 
 #### Status:
 This document was last revised or approved by the membership of OASIS on the above date. The level of approval is also listed above. Check the "Latest stage" location noted above for possible later revisions of this document. Any other numbered Versions and other technical work produced by the Technical Committee (TC) are listed at https://www.oasis-open.org/committees/tc_home.php?wg_abbrev=csaf#technical.