Align docstring format

Co-authored-by: Peter Andreas Entschev <peter@entschev.com>

ucp/_libs/arr.pyx

@@ -302,11 +302,15 @@ cdef inline Py_ssize_t _nbytes(Py_ssize_t itemsize,
 cpdef Array asarray(obj):
     """Coerce other objects to ``Array``. No-op for existing ``Array``s.
 
-    Args:
-        obj: Object exposing the Python buffer protocol or ``__cuda_array_interface__``
+    Parameters
+    ----------
+    obj: object
+        Object exposing the Python buffer protocol or ``__cuda_array_interface__``.
 
-    Returns:
-        Array: An instance of the ``Array`` class
+    Returns
+    -------
+    array: Array
+        An instance of the ``Array`` class.
     """
     if isinstance(obj, Array):
         return <Array>obj