Markdownify & upgrade to Docusaurus v3

.github/workflows/docs.yml

@@ -10,11 +10,11 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: checkout
-        uses: actions/checkout@v1
+        uses: actions/checkout@v4
       - name: setup
-        uses: actions/setup-node@v1
+        uses: actions/setup-node@v4
         with:
-          node-version: '16.x'
+          node-version: '20.x'
           run: |
             npm ci
             npm run build
@@ -23,11 +23,11 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: checkout
-        uses: actions/checkout@v1
+        uses: actions/checkout@v4
       - name: setup
-        uses: actions/setup-node@v1
+        uses: actions/setup-node@v4
         with:
-          node-version: '16.x'
+          node-version: '20.x'
       - name: ssh
         env:
           SSH_AUTH_SOCK: /tmp/ssh_agent.sock

README.md

@@ -1,6 +1,6 @@
 # PGM Documentation Website
 
-Source for the official [PGM plugin](https://github.com/PGMDev/PGM) documentation, using [Docusaurus 2](https://docusaurus.io/).
+Source for the official [PGM plugin](https://github.com/PGMDev/PGM) documentation, using [Docusaurus](https://docusaurus.io/).
 
 ## Overview