boards: arm: bl5340_dvk: Fix broken image

This updates the broken image for the BL5340 board to a working one

Signed-off-by: Jamie McCrae <[email protected]>

Author: Jamie McCrae

boards/arm/bl5340_dvk/doc/img/bl5340_dvk_front.jpg

@@ -43,8 +43,8 @@ This development kit has the following features:
 * :abbr:`USB (Universal Serial Bus)`
 * :abbr:`WDT (Watchdog Timer)`
 
-.. figure:: img/bl5340_dvk_front.jpg
-     :width: 800px
+.. figure:: img/bl5340_dvk_top.png
+     :width: 340px
      :align: center
      :alt: BL5340 DVK