FIX: Errors in nav path

content/antora.yml

 # https://docs.antora.org/antora/2.3/component-version-descriptor/
 # https://docs.antora.org/antora/2.3/component-name-and-version/
 name: artefacts
-version: '1.1'
+version: '1.0'
 
 # https://docs.antora.org/antora/2.3/component-display-version/
 # display_version: α
@@ -14,5 +14,5 @@ start_page: index.adoc
 
 # https://docplayer.fr/169511571-Asciidoc-asciidoctor-antora.html
 nav:
-- modules/ROOT/nav.adoc
+- modules/ROOT/pages/nav.adoc
 

content/modules/ROOT/pages/nav.adoc

 * xref:index.adoc[]
 * xref:properties.adoc[]
+* xref:concepts.adoc[]
\ No newline at end of file