Fix the node column merge example.
@@ -344,6 +344,13 @@ Right input file:
Output file:
+| id | shape | color |
+| --- | --- | --- |
+| block1 | cube | |
+| block1 | | red |
+
+After using [`kgtk compact`](https:../compact) to compact the entries:
+
| id | shape | color |
| --- | --- | --- |
| block1 | cube | red |
