chore(docs):fixed docker.md (#45)

Author: jyxjjj

docs/guide/install/docker.md

@@ -25,7 +25,7 @@ Note: The official OpenList Docker image has not yet been released. The Docker i
 #### **docker cli**
 
 ```bash
-docker run -d --restart=unless-stopped -v /etc/openlist:/opt/openlist/data -p 5244:5244 -e PUID=0 -e PGID=0 -e UMASK=022 --name="openlist" openlistteam/openlist:bata
+docker run -d --restart=unless-stopped -v /etc/openlist:/opt/openlist/data -p 5244:5244 -e PUID=0 -e PGID=0 -e UMASK=022 --name="openlist" openlistteam/openlist:beta
 ```
 
 #### **docker compose**