Updated Layouts (markdown)

Layouts.md

@@ -381,6 +381,28 @@ Here are the different classes:
    ```
    </details>
 
+* If you don't want to enable the _Number row_ setting (in this case the keyboard view has 4 rows) but want to have 5 rows in the Symbol or More Symbols view, you need to add an empty row with the code `[ { "type": "placeholder" } ],` at the beginning of the row editing.
+
+   <details>
+   <summary><b><i>Click to see example with `[ { "type": "placeholder" } ],`</i></b></summary>
+   <br>
+
+   ```json
+   // Start of file
+   [
+   // EMPTY ROW
+     [
+       { "type": "placeholder" }
+     ],
+   // ROW 1
+     [
+     ],
+   // etc.
+   ]
+   ```
+
+   </details>
+
 # Examples of JSON files
 
 [Here](https://github.com/Helium314/HeliBoard/discussions/1132#discussion-7260853) are some sample JSON files that customize all the keyboard views.