chore: update version and requires

Author: ruibaby

theme.yaml

@@ -1,5 +1,7 @@
 apiVersion: theme.halo.run/v1alpha1
 kind: Theme
+metadata:
+  name: theme-xue
 spec:
   displayName: Xue
   author:
@@ -11,7 +13,5 @@ spec:
   repo: https://github.com/xzhuz/halo-theme-xue
   settingName: theme-xue-setting
   configMapName: theme-xue-configMap
-  version: 0.0.0
-  require: "2.0"
-metadata:
-  name: theme-xue
+  version: "2.0.0-beta.1"
+  requires: ">=2.0.0"