Add feed items tag

src/articles/articles.11tydata.json

@@ -1,5 +1,5 @@
 {
-    "tags": "articles",
+    "tags": ["articles", "feed items"],
     "layout": "main/article",
     "eleventyComputed": {
         "title": "{{ articleTitle }} | Articles"

src/blog/posts/posts.11tydata.json

@@ -1,6 +1,6 @@
 {
     "layout": "main/article",
-    "tags": "posts",
+    "tags": ["posts", "feed items"],
     "eleventyComputed": {
         "title": "{{ articleTitle }} | Blog"
     }

src/changelog/logs/logs.11tydata.json

@@ -1,4 +1,4 @@
 {
-    "tags": "changelogs",
+    "tags": ["changelogs", "feed items"],
     "permalink": false
 }