Fix cis argument

Author: kgryte

spec/API_specification/array_api/elementwise_functions.py

@@ -536,12 +536,12 @@ def exp(x: array, /) -> array:
     .. note::
        For complex floating-point operands, ``exp(conj(x))`` must equal ``conj(exp(x))``.
 
-    - If ``a`` is either ``+0`` or ``-0`` and ``b`` is ``+0``, the result is ``1+0j``.
+    - If ``a`` is either ``+0`` or ``-0`` and ``b`` is ``+0``, the result is ``1 + 0j``.
     - If ``a`` is a finite number and ``b`` is ``+infinity``, the result is ``NaN + NaN j``.
     - If ``a`` is a finite number and ``b`` is ``NaN``, the result is ``NaN + NaN j``.
     - If ``a`` is ``+infinity`` and ``b`` is ``+0``, the result is ``infinity + 0j``.
-    - If ``a`` is ``-infinity`` and ``b`` is a finite number, the result is ``+0 * cis(x_i)``.
-    - If ``a`` is ``+infinity`` and ``b`` is a nonzero finite number, the result is ``+infinity * cis(x_i)``.
+    - If ``a`` is ``-infinity`` and ``b`` is a finite number, the result is ``+0 * cis(b)``.
+    - If ``a`` is ``+infinity`` and ``b`` is a nonzero finite number, the result is ``+infinity * cis(b)``.
     - If ``a`` is ``-infinity`` and ``b`` is ``+infinity``, the result is ``0 + 0j`` (signs of real and imaginary components are unspecified).
     - If ``a`` is ``+infinity`` and ``b`` is ``+infinity``, the result is ``infinity + NaN j`` (sign of real component is unspecified).
     - If ``a`` is ``-infinity`` and ``b`` is ``NaN``, the result is ``0 + 0j`` (signs of real and imaginary components are unspecified).