Resolve "Document zotero process"

References #147 (closed)

• put the json in public
• Add some doc
• How to use references in the wiki pages : ongoing, see issue #124 (closed)
• How the zotero file is generated
• How can we update it
• How can someone external update it ?

components/content/ArticleDoi.vue

@@ -19,10 +19,10 @@ const { mobile } = useDisplay();
 const show = ref(false);
 
 const articleTitle = computed(() => {
-  return props?.title ?? article.value?.title ?? props.doi;
+  return props?.title ?? article?.value?.title ?? props.doi;
 });
 const articleAbstract = computed(() => {
-  return props.abstract ?? article.value?.abstract;
+  return props.abstract ?? article?.value?.abstract;
 });
 </script>
 <template>