Update src/stdlib_intrinsics.fypp

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

Author: jalvesz

src/stdlib_intrinsics.fypp

@@ -23,7 +23,7 @@ module stdlib_intrinsics
         !! This interface provides standard conforming call for sum of elements of any rank.
         !! The 1-D base implementation follows a chunked approach for optimizing performance and increasing accuracy.
         !! The `N-D` interfaces calls upon the `(N-1)-D` implementation. 
-        !! Supported data types include `real` and `complex`.
+        !! Supported data types include `real`, `complex` and `integer`.
         !!
         #:for rk, rt, rs in RC_KINDS_TYPES
         pure module function stdlib_sum_1d_${rs}$(a) result(s)