Typos in qutip.expect()'s docstring

[gabbence95]

Bug Description

Two words in the docstring contain typos. See below.

Code to Reproduce the Bug

from qutip import expect
print(expect.__doc__)

Code Output

Parameters
----------
oper : qobj/array-like
    A single or a `list` or operators for expectation value.

state : qobj/array-like
    A single or a `list` of quantum states or density matrices.

Returns
-------
expt : float/complex/array-like
    Expectation value.  ``real`` if `oper` is Hermitian, ``complex``
    otherwise. A (nested) array of expectaction values of state or operator
    are arrays.

Expected Behaviour

Parameters

oper : qobj/array-like
A single or a list or of operators for expectation value.

state : qobj/array-like
A single or a list of quantum states or density matrices.

Returns

expt : float/complex/array-like
Expectation value. real if oper is Hermitian, complex
otherwise. A (nested) array of expectaction values of if state or operator
are arrays.

Your Environment

QuTiP Version:      4.7.5
Numpy Version:      1.26.4
Scipy Version:      1.11.4
Cython Version:     None
Matplotlib Version: 3.8.3
Python Version:     3.12.2
Number of CPUs:     8
BLAS Info:          Generic
OPENMP Installed:   False
INTEL MKL Ext:      False
Platform Info:      Windows (AMD64)

Additional Context

No response

[Ericgig]

@gabbence95
Thank you for catching the error.