fix(agreement): fix translation path for empty state texts

调整了协议页面空状态的多语言引用路径，移除了嵌套的agreement对象层级，让调用路径匹配实际的多语言文件结构

lang/en-us/agreement/contenr.js

@@ -2,12 +2,10 @@ export const lang = {
 	//title为每个页面的标题
 	title: 'Agreement',
 	// agreement/contenr.vue page new translation items
-	agreement: {
-		// No content
-		noContent: 'No content',
-		// This agreement content has not been set
-		noContentDesc: 'This agreement content has not been set',
-		// Reload
-		reload: 'Reload',
-	},
+	// No content
+	noContent: 'No content',
+	// This agreement content has not been set
+	noContentDesc: 'This agreement content has not been set',
+	// Reload
+	reload: 'Reload',
 }