rotate pictures, adjust width of pictures in page

doc/TinySpHEAR_zapnspark.md

@@ -21,11 +21,11 @@ Connecting the capsules with the printed circuit boards:
 
 Sliding the printed circuit boards into the slots in the body:
 
-<img src="pictures/TinySpHEAR_zapnspark_3.png" width="400">
+<img src="pictures/TinySpHEAR_zapnspark_3.png" width="600">
 
 Connecting to the 4 conductor cable:
 
-<img src="pictures/TinySpHEAR_zapnspark_4.png" width="400">
+<img src="pictures/TinySpHEAR_zapnspark_4.png" width="600">
 
 Ready to test: