doc: Add more images

Signed-off-by: Rahix <rahix@rahix.de>

Documentation/debugger.rst

@@ -5,9 +5,7 @@ Debugger
 If you have one of our debuggers for card10, this page details how you can use
 it.  The debugger looks like either one in the following pictures:
 
-.. todo::
-
-   Debugger Picture
+.. image:: static/debuggers.png
 
 OpenOCD
 -------

Documentation/how-to-flash.rst

@@ -11,9 +11,7 @@ the bottom right pressed.  Rebooting is done by either short pressing the power
 button (top left) while you have a working firmware, or turning the card10 off
 completely (by pressing the power button for 8 seconds) and then starting it again.
 
-.. todo::
-
-   Image showing the location of the buttons
+.. image:: static/bootloader-buttons.png
 
 If you did everything correctly, the bootloader will display: