index.page: fix syntax for the Photos list item

help/C/index.page

@@ -153,7 +153,7 @@
       new colors look better and are easier to read thanks to improved color
       contrast.</p></item>
       <item><p><app>Photos</app> has gained a new image filter, Trencin, very
-      similar to Instagram’s Clarendon filter.</p>/</item>
+      similar to Instagram’s Clarendon filter.</p></item>
       <item><p>The system menu has a new <gui style="menuitem">Restart</gui>
       option, which also can be used to go to the Boot menu by holding down the
       <key>Alt</key> key.</p></item>