update release notes and downloads

Author: hmottestad

site/content/download.md

@@ -54,8 +54,8 @@ which artifacts RDF4J provides.
 
 ### RDF4J 4.3
 
-- [RDF4J 4.3.14 SDK (zip)](http://www.eclipse.org/downloads/download.php?file=/rdf4j/eclipse-rdf4j-4.3.14-sdk.zip)
-- [RDF4J 4.3.14 onejar](http://www.eclipse.org/downloads/download.php?file=/rdf4j/eclipse-rdf4j-4.3.14-onejar.jar)
+- [RDF4J 4.3.15 SDK (zip)](http://www.eclipse.org/downloads/download.php?file=/rdf4j/eclipse-rdf4j-4.3.15-sdk.zip)
+- [RDF4J 4.3.15 onejar](http://www.eclipse.org/downloads/download.php?file=/rdf4j/eclipse-rdf4j-4.3.15-onejar.jar)
 
 
 ### RDF4J 4.2

site/content/release-notes/4.3.15.md

@@ -5,7 +5,3 @@ toc: true
 RDF4J 4.3.15 is a patch release that fixes 4 issues.
 
 For a complete overview, see [all issues fixed in 4.3.15](https://github.com/eclipse/rdf4j/milestone/112?closed=1).
-
-### Acknowledgements
-
-This release was made possible by contributions from ???