Replace @flowershow/* with @portaljs/* packages in /examples (#953)

* [examples/ckan][m]: rplc @flowershow with @portaljs packages

* [examples/fivethirtyeight][m]: rplc @flowershow with @portaljs packages

* [examples/turing][m]: rplc @flowershow with @portaljs packages

* [examples/openspending][m]: rplc @flowershow with @portaljs packages

* [examples/learn][m]: rplc @flowershow with @portaljs packages

* [examples/github-backed-catalog][m]: rplc @flowershow with @portaljs packages

* [examples/github-backed-catalog][xs] - fix build

* [examples][m] - fix builds

* [examples/openspending][xs] - fix build

---------

Co-authored-by: Luccas Mateus de Medeiros Gomes <luccasmmg@gmail.com>

examples/fivethirtyeight/package.json

@@ -9,10 +9,11 @@
     "lint": "next lint"
   },
   "dependencies": {
-    "@flowershow/core": "^0.4.13",
     "@headlessui/react": "^1.7.14",
     "@heroicons/react": "^2.0.18",
     "@portaljs/components": "^0.1.8",
+    "@portaljs/core": "^1.0.5",
+    "@portaljs/remark-wiki-link": "^1.0.4",
     "@tailwindcss/typography": "^0.5.9",
     "@types/node": "20.1.1",
     "@types/react": "18.2.6",