prepared hello wolf yaml for doc

demos/hello_wolf/yaml/processor_odom_2d.yaml

-#type:               "ProcessorOdom2d"
-
 time_tolerance:       0.1
 unmeasured_perturbation_std: 0.001
 keyframe_vote:

demos/hello_wolf/yaml/processor_range_bearing.yaml

-#type:                 "ProcessorRangeBearing"
-
 time_tolerance:       0.1
 
 keyframe_vote:

demos/hello_wolf/yaml/sensor_odom_2d.yaml

-#type: "SensorOdom2d"              # This must match the KEY used in the FactorySensorNode. Otherwise it is an error.
-
 k_disp_to_disp:   0.1  # m^2   / m
 k_rot_to_rot:     0.1  # rad^2 / rad
 k_disp_to_rot:    0.0  # m^2   / rad

demos/hello_wolf/yaml/sensor_range_bearing.yaml

-#type:                       "SensorRangeBearing"
-
 noise_range_metres_std:     0.1
 noise_bearing_degrees_std:  0.5
 apply_loss_function: true