feat: add fionnlinux.com to showcase

exampleSite/content/users/users.json

@@ -1062,5 +1062,16 @@
       "Solarpunk",
       "Community Project"
     ]
+  },
+  {
+    "title": "fionnlinux.com",
+    "url": "https://fionnlinux.com",
+    "source": "https://github.com/fionnlinux/fionnlinux.com",
+    "tags": [
+      "Personal site",
+      "Blog",
+      "Linux",
+      "Open Source"
+    ]
   }
-]
+]