docs: remove extra empty line

PR-URL: #11869
Reviewed-by: Athan Reines <kgryte@gmail.com>
Reviewed-by: Philipp Burckhardt <pburckhardt@outlook.com>

Author: stdlib-bot

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

@@ -258,7 +258,6 @@ int main( void ) {
 
 <!-- /.c -->
 
-
 * * *
 
 <section class="references">