Fix broken docs archive path

Author: jjaderberg

doc/build.gradle

@@ -287,16 +287,16 @@ html {
 
 task packageHtml(type: Tar, dependsOn: [html, sitemap]) {
     description 'Package HTML for distribution, including sitemap.'
-    archiveBaseName.set(docsArtifactsName)
-    archiveExtension.set('tar.gz')
-    archiveVersion.set(versions.gdsManual.toString())
+    archiveBaseName = docsArtifactsName
+    archiveExtension = 'tar.gz'
+    archiveVersion = versions.gdsManual
     compression = Compression.GZIP
     from { html }
     from { sitemap }
     // The 'into' path will end up being the URL scheme for the HTML pages on the website.
     // It must follow Docs team's layout of `(neo4j.com/docs/)$publication/$version`
-    into "graph-data-science/$archiveVersion"
-    destinationDirectory.set(file("$distributionDir/documentation"))
+    into "graph-data-science/${archiveVersion.get()}"
+    destinationDirectory = file("$distributionDir/documentation")
 }
 
 task pdf {