fix: update signature to indicate complex scalar support

Author: kgryte

src/array_api_stubs/_draft/array_object.py

@@ -148,7 +148,7 @@ def __abs__(self: array, /) -> array:
             Added complex data type support.
         """
 
-    def __add__(self: array, other: Union[int, float, array], /) -> array:
+    def __add__(self: array, other: Union[int, float, complex, array], /) -> array:
         """
         Calculates the sum for each element of an array instance with the respective element of the array ``other``.
 
@@ -167,8 +167,7 @@ def __add__(self: array, other: Union[int, float, array], /) -> array:
         Notes
         -----
 
-        .. note::
-           Element-wise results, including special cases, must equal the results returned by the equivalent element-wise function :func:`~array_api.add`.
+        -   Element-wise results, including special cases, must equal the results returned by the equivalent element-wise function :func:`~array_api.add`.
 
         .. versionchanged:: 2022.12
             Added complex data type support.
@@ -190,9 +189,10 @@ def __and__(self: array, other: Union[int, bool, array], /) -> array:
         out: array
             an array containing the element-wise results. The returned array must have a data type determined by :ref:`type-promotion`.
 
+        Notes
+        -----
 
-        .. note::
-           Element-wise results must equal the results returned by the equivalent element-wise function :func:`~array_api.bitwise_and`.
+        -   Element-wise results must equal the results returned by the equivalent element-wise function :func:`~array_api.bitwise_and`.
         """
 
     def __array_namespace__(

src/array_api_stubs/_draft/elementwise_functions.py

@@ -272,15 +272,17 @@ def acosh(x: array, /) -> array:
     """
 
 
-def add(x1: Union[array, int, float], x2: Union[array, int, float], /) -> array:
+def add(
+    x1: Union[array, int, float, complex], x2: Union[array, int, float, complex], /
+) -> array:
     """
     Calculates the sum for each element ``x1_i`` of the input array ``x1`` with the respective element ``x2_i`` of the input array ``x2``.
 
     Parameters
     ----------
-    x1: Union[array, int, float]
+    x1: Union[array, int, float, complex]
         first input array. Should have a numeric data type.
-    x2: Union[array, int, float]
+    x2: Union[array, int, float, complex]
         second input array. Must be compatible with ``x1`` (see :ref:`broadcasting`). Should have a numeric data type.
 
     Returns