style(editor): 优化模板嵌套格式，提升代码可读性

- 将多行 template 标签合并为单行，简化代码结构
- 统一缩进，减少冗余换行
- 保持代码风格一致，方便后续维护

src/views/editor/components/DocNodeRenderer/index.vue

@@ -1324,10 +1324,7 @@
                     <div class="flex flex-wrap items-center gap-1.5 text-sm" :style="{ justifyContent: 'var(--cell-align, flex-start)' }">
                         <span class="text-color2 font-medium">FIN:</span>
                         <template v-for="eindata in node.children" :key="eindata.id">
-                            <template
-                                v-for="child in getEinDataSubChildren(eindata)"
-                                :key="child.id"
-                            >
+                            <template v-for="child in getEinDataSubChildren(eindata)" :key="child.id">
                                 <span
                                     class="font-mono cursor-pointer hover:underline transition-all"
                                     :data-node-id="child.id"
@@ -1357,10 +1354,7 @@
                                     :parent="eindata"
                                 />
                                 <div class="pl-2">
-                                    <template
-                                        v-for="child in getEinDataSubChildren(eindata)"
-                                        :key="child.id"
-                                    >
+                                    <template v-for="child in getEinDataSubChildren(eindata)" :key="child.id">
                                         <span
                                             class="font-mono cursor-pointer hover:underline transition-all"
                                             :data-node-id="child.id"