chore: update according to code review

Signed-off-by: Nakul Krishnakumar <nakulkrishnakumar86@gmail.com>

Author: nakul-krishnakumar

lib/node_modules/@stdlib/ml/base/cluster/kmeans/metrics/include/stdlib/ml/cluster/base/kmeans/metrics.h

@@ -16,8 +16,8 @@
 * limitations under the License.
 */
 
-#ifndef STDLIB_ML_CLUSTER_BASE_KMEANS_METRICS_H
-#define STDLIB_ML_CLUSTER_BASE_KMEANS_METRICS_H
+#ifndef STDLIB_ML_BASE_CLUSTER_KMEANS_METRICS_H
+#define STDLIB_ML_BASE_CLUSTER_KMEANS_METRICS_H
 
 /**
 * Enumeration of distance metrics.
@@ -33,4 +33,4 @@ enum STDLIB_ML_CLUSTER_KMEANS_METRICS {
 	STDLIB_ML_CLUSTER_KMEANS_CITYBLOCK
 };
 
-#endif // !STDLIB_ML_CLUSTER_BASE_KMEANS_METRICS_H
+#endif // !STDLIB_ML_BASE_CLUSTER_KMEANS_METRICS_H