Update index_body.htm

src/admin/templets/index_body.htm

@@ -54,7 +54,7 @@
 											<td id="yestoday_vv">0</td>
 										</tr>
 										<tr>
-											<td>历史峰值</td>
+											<td>半月峰值</td>
 											<td id="total_pv">0</td>
 											<td id="total_uv">0</td>
 											<td id="total_ip">0</td>