Apply suggestions from code review

Co-authored-by: Athan <kgryte@gmail.com>
Signed-off-by: Athan <kgryte@gmail.com>

Author: kgryte

lib/node_modules/@stdlib/stats/base/ndarray/dmeanpw/README.md

@@ -258,6 +258,8 @@ int main( void ) {
 
 <!-- /.c -->
 
+* * *
+
 <section class="references">
 
 ## References