docstring fix

pennylane/registers.py

@@ -39,15 +39,11 @@ def registers(register_dict):
 
  **Example**
 
- Given input ``{"ancilla": {"sub_ancilla": 2, "sub_ancilla1": 1}}``, ``qml.registers()`` creates
- a dictionary with 3 key-value pairs. The keys are the register names found in the input:
- "ancilla", "sub_ancilla" and "sub_ancilla1". The values are the respective :class:`~.Wires`
- objects for each register. For example, "ancilla" has two sub registers "sub_ancilla" and
- "sub_ancilla1". Therefore, the value associated with key "ancilla" is the union of the
- :class:`~.Wires` of its sub registers. Since its sub registers "sub_ancilla" and "sub_ancilla1"
- have :class:`~.Wires` objects ``Wires([0, 1])`` and ``Wires([2])`` respectively, the key "ancilla"
- has the value ``Wires([0, 1, 2])``.
+ Given flat input dictionary:
+ >>> qml.registers({"alice": 2, "bob": 3})
+ {'alice': Wires([0, 1]), 'bob': Wires([2, 3, 4])}
 
+ Given nested input dictionary:
  >>> wire_registers = qml.registers({"ancilla": {"sub_ancilla": 2, "sub_ancilla1": 1}})
  >>> wire_dict
  {'sub_ancilla': Wires([0, 1]), 'sub_ancilla1': Wires([2]), 'ancilla': Wires([0, 1, 2])}