fix: update return type

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---

Author: kgryte

lib/node_modules/@stdlib/ndarray/base/dtype-alignment/src/main.c

@@ -38,7 +38,7 @@
 * int8_t out = stdlib_ndarray_dtype_alignment( STDLIB_NDARRAY_FLOAT64 );
 * // returns 8
 */
-uint8_t stdlib_ndarray_dtype_alignment( enum STDLIB_NDARRAY_DTYPE dtype ) {
+int8_t stdlib_ndarray_dtype_alignment( enum STDLIB_NDARRAY_DTYPE dtype ) {
 	switch ( dtype ) {
 	case STDLIB_NDARRAY_FLOAT64:
 		return STDLIB_NDARRAY_FLOAT64_ALIGNMENT;