Layout Grid Example: Fix paragraph tag and white space

examples/grid/LayoutGrids.html

@@ -38,7 +38,7 @@ <h1>Layout Grid Examples</h1>
     Thus, a link contained inside of a grid cell is presented to a screen reader as a link.
     By contrast, a link inside of a menu is presented as a menuitem, and a link inside of a listbox is presented as an option.
   </p>
-  <p> Similar examples include:</p>
+  <p>Similar examples include:</p>
   <ul>
     <li><a href="dataGrids.html">Data Grid Examples</a>: Three example implementations of grid that include features relevant to presenting tabular information, such as content editing, sort, and column hiding.</li>
     <li><a href="advancedDataGrid.html">Advanced Data Grid Example</a>: Example of a grid with behaviors and features similar to a typical spreadsheet, including cell and row selection.</li>