[LLDB] Add missing breaks to current frame row in command map

Without these it was rendering as one line for all three commands.

Author: DavidSpickett

lldb/docs/use/map.rst

@@ -419,7 +419,9 @@ Execution Commands
                </td>
                <td class="content">
                   <b>(lldb)</b> frame select
+                  <br>
                   <b>(lldb)</b> f
+                  <br>
                   <b>(lldb)</b> process status
                </td>
          </tr>