修改文案

src/views/choose-homework/classroom-detail/index.tsx

@@ -415,7 +415,7 @@ export default defineComponent({
                 const ids = getKnowledgeMaterialIds(data.list);
                 if (state.max !== -1) {
                   if (ids.length > state.max) {
-                    showToast(`当前练习组只可添加${state.max}条练习`);
+                    showToast(`当前练习组只可添加${state.max}条练习内容`);
                     return;
                   }
                 }