minor changes

Author: ytdHuang

src/steadystate.jl

@@ -80,15 +80,15 @@ For more details about the solving `alg`orithms, please refer to [`OrdinaryDiffE
 Base.@kwdef struct SteadyStateODESolver{
     MT<:OrdinaryDiffEqAlgorithm,
     ST<:Union{Nothing,QuantumObject},
-    T1<:Real,
-    T2<:Real,
-    T3<:Real,
+    TT<:Real,
+    RT<:Real,
+    AT<:Real,
 } <: SteadyStateSolver
     alg::MT = Tsit5()
     ψ0::ST = nothing
-    tmax::T1 = Inf
-    terminate_reltol::T2 = 10 * DEFAULT_ODE_SOLVER_OPTIONS.reltol
-    terminate_abstol::T3 = 10 * DEFAULT_ODE_SOLVER_OPTIONS.abstol
+    tmax::TT = Inf
+    terminate_reltol::RT = 10 * DEFAULT_ODE_SOLVER_OPTIONS.reltol
+    terminate_abstol::AT = 10 * DEFAULT_ODE_SOLVER_OPTIONS.abstol
 end
 
 @doc raw"""