API Token example does not work.

There is a missing " on this line:
```python
client.authenticate({"Servers": [{"AccessToken: , "address": }]}, discover=False)
```

It should be:
```python
client.authenticate({"Servers": [{"AccessToken": , "address": }]}, discover=False)
```

Although after adding that, there is now an error about missing key `DateLastAccessed`.

```
Traceback (most recent call last):
File "/home/sjorge/anilist-jf-sync/./sync.py", line 29, in
jas = JellyfinAnilistSync(
File "/home/sjorge/anilist-jf-sync/./sync.py", line 25, in __init__
self.client.authenticate({"Servers": [{"AccessToken": api, "address": url}]}, discover=False)
File "/home/sjorge/anilist-jf-sync/venv/lib/python3.10/site-packages/jellyfin_apiclient_python/client.py", line 55, in authenticate
state = self.auth.connect(options or {}, discover)
File "/home/sjorge/anilist-jf-sync/venv/lib/python3.10/site-packages/jellyfin_apiclient_python/connection_manager.py", line 197, in connect
servers = self.get_available_servers(discover)
File "/home/sjorge/anilist-jf-sync/venv/lib/python3.10/site-packages/jellyfin_apiclient_python/connection_manager.py", line 88, in get_available_servers
servers.sort(key=itemgetter('DateLastAccessed'), reverse=True)
KeyError: 'DateLastAccessed'
```

Start by reproducing the API-token authentication example and inspect connection_manager.py, especially get_available_servers where the traceback reports the DateLastAccessed sort. Confirm the corrected example no longer raises the KeyError, and add or update a focused regression test if the repository contains coverage for authentication or server discovery.

Written by the indexing model from the issue text.