chore: fix parameter description

Author: headlessNode

lib/node_modules/@stdlib/blas/ext/base/dnannsumors/README.md

@@ -55,7 +55,7 @@ The function has the following parameters:
 -   **N**: number of indexed elements.
 -   **x**: input [`Float64Array`][@stdlib/array/float64].
 -   **strideX**: stride length for `x`.
--   **out**: output [`Float64Array`][@stdlib/array/float64] whose first element is the sum and whose second element is the pointer for storing the number of non-NaN elements.
+-   **out**: output [`Float64Array`][@stdlib/array/float64] whose first element is the sum and whose second element is the number of non-NaN elements.
 -   **strideOut**: stride length for `out`.
 
 The `N` and stride parameters determine which elements are accessed at runtime. For example, to compute the sum of every other element in `x`,