Remove class Array text from models and solvers (#349)

Co-authored-by: Daniel Puzzuoli <[email protected]>

qiskit_dynamics/models/generator_model.py

@@ -117,7 +117,7 @@ class GeneratorModel(BaseGeneratorModel):
 
         G(t) = \sum_i s_i(t) G_i + G_d
 
-    where the :math:`G_i` are matrices (represented by :class:`Operator` or :class:`Array` objects),
+    where the :math:`G_i` are matrices (represented by an :class:`Operator` or array),
     the :math:`s_i(t)` are signals represented by a list of :class:`Signal` objects, and :math:`G_d`
     is the constant-in-time static term of the generator.
     """

qiskit_dynamics/solvers/solver_functions.py

@@ -143,7 +143,7 @@ def solve_ode(
         \dot{y}(t) = f(t, y(t)),
 
     where :math:`f` is a callable function and the state :math:`y(t)` is an
-    arbitrarily-shaped complex :class:`Array`.
+    arbitrarily-shaped complex array.
 
     The ``method`` argument exposes a variety of underlying ODE solvers. Optional
     arguments for any of the solver routines can be passed via ``kwargs``.
@@ -235,7 +235,7 @@ def solve_lmde(
         \dot{y}(t) = G(t)y(t).
 
     where :math:`G(t)` is a square matrix valued-function called the *generator*, and :math:`y(t)`
-    is an :class:`Array` of appropriate shape.
+    is an array of appropriate shape.
 
     Thus function accepts :math:`G(t)` as a ``qiskit_dynamics`` model class, or as an arbitrary
     callable.