Fix markup for documentation

camrasdevices.py

@@ -3,9 +3,10 @@
 This module contains some classes for conveniently working with the devices in the Dwingeloo
 Telescope that communicate over GPIB (General Purpuse Interface Bus) or HPIB (presumably the
 HP variant of GPIB). Currently, three of these devices exist, on different HPIB addresses:
-    * Receiver (address 1)
-    * Local Oscillator (address 28), used for mixing signals to downconvert them
-    * Clock Generator (address 14), used as the clock for the FPGA
+
+- Receiver (address 1)
+- Local Oscillator (address 28), used for mixing signals to downconvert them
+- Clock Generator (address 14), used as the clock for the FPGA
 
 For each of the three devices a class exists. Setting and getting the frequency of these
 devices is done by using their `frequency` attribute.
@@ -21,10 +22,13 @@ Example:
 
 By default, the setter method of `frequency` checks if setting the device succeeded. This is a
 blocking operation, but the HPIB bus is quite fast.
+
     >>> lo.frequency = 1.e18
     Traceback (most recent call last):
     RuntimeError: Setting frequency failed: tried to set to 1e+18 Hz, it is now 1100000000.0 Hz
+
 This checking can be disabled:
+
     >>> non_checking_lo = camrasdevices.LocalOscillator(check_frequency = False)
     >>> non_checking_lo.frequency = 1.e18
     >>> non_checking_lo.frequency