Update packmode.md: remove extra dot

content/en/docs/attrs/packmode.md

@@ -7,7 +7,7 @@ title: packmode
 types:
 - packMode
 used_by: G
-description: How connected components should be packed.
+description: How connected components should be packed
 ---
 (cf [`packMode`](/docs/attr-types/packMode/)). Note that defining `packmode` will automatically
 turn on packing as though one had set `pack=true`.