fix typo

Author: ytdHuang

src/qobj/synonyms.jl

@@ -44,7 +44,7 @@ ScalarOperator(0.0 + 0.0im) * MatrixOperator(20 × 20)
 ```
 """
 QobjEvo(op::QuantumObject, f::Function; type::Union{Nothing,QuantumObjectType} = nothing) =
-    QobjEvo(((op, f),); type = type)
+    QuantumObjectEvolution(op, f; type = type)
 
 @doc raw"""
     QobjEvo(op_func_list::Union{Tuple,AbstractQuantumObject}, α::Union{Nothing,Number}=nothing; type::Union{Nothing, QuantumObjectType}=nothing)