Update doc/specs/stdlib_intrinsics.md

Co-authored-by: Federico Perini <federico.perini@gmail.com>

Author: jalvesz

doc/specs/stdlib_intrinsics.md

@@ -48,7 +48,7 @@ If `dim` is absent, the output is a scalar of the same `type` and `kind` as to t
 
 #### Description
 
-The `stdlib_sum_kahan` function can replace the intrinsic `sum` for `real` or `complex` arrays. It follows a chunked implementation which maximizes vectorization potential complemented by an `elemental` kernel based on the [kahan summation](https://doi.org/10.1145%2F363707.363723) strategy to reduce the round-off error:
+The `stdlib_sum_kahan` function can replace the intrinsic `sum` for `real`, `complex` or `integer` arrays. It follows a chunked implementation which maximizes vectorization potential complemented by an `elemental` kernel based on the [kahan summation](https://doi.org/10.1145%2F363707.363723) strategy to reduce the round-off error:
 
 ```fortran
 elemental subroutine kahan_kernel_<kind>(a,s,c)