fix(dingus) Grammar!

Signed-off-by: Jerome Simeon <[email protected]>

Author: jeromesimeon

packages/dingus/lib/sample.md

@@ -5,7 +5,7 @@ You can try TemplateMark here.  This dingus is powered by
 
 TemplateMark lets you to create templates for CommonMark. Templates can contain {{variables}}, {{% formulas %}}, and {{#if true}}template blocks{{/if}}.
 
-_It can also, of course, contain **markdown**:_
+_They can also, of course, contain **markdown**:_
 
 1. item one
 2. item two