refactor: 移除管理后台分类、系列和标签页面中的冗余文字

src/routes/admin/categories/+page.svelte

@@ -137,7 +137,7 @@
 								<span class="badge">{category.slug}</span>
 							{/if}
 						</td>
-						<td><span class="badge">{category.post_count} 篇文章</span></td>
+						<td><span class="badge">{category.post_count}</span></td>
 						<td>
 							{#if editingId === category.id}
 								<form

src/routes/admin/series/+page.svelte

@@ -134,7 +134,7 @@
 								<span class="badge">{item.slug}</span>
 							{/if}
 						</td>
-						<td><span class="badge">{item.post_count} 篇文章</span></td>
+						<td><span class="badge">{item.post_count}</span></td>
 						<td>
 							{#if editingId === item.id}
 								<form

src/routes/admin/tags/+page.svelte

@@ -75,7 +75,7 @@
 								<strong>{tag.name}</strong>
 							{/if}
 						</td>
-						<td><span class="badge">{tag.post_count} 篇文章</span></td>
+						<td><span class="badge">{tag.post_count}</span></td>
 						<td>
 							{#if editingId === tag.id}
 								<form