docs: update list of contributors

PR-URL: #5840

Reviewed-by: Philipp Burckhardt <pburckhardt@outlook.com>
Signed-off-by: stdlib-bot <82920195+stdlib-bot@users.noreply.github.com>

Author: stdlib-bot

CONTRIBUTORS

@@ -18,6 +18,7 @@ Aleksandr <112382387+alextes90@users.noreply.github.com>
 Ali Salesi <ali_sal1381@yahoo.com>
 Aman Bhansali <bhansali.1@iitj.ac.in>
 Amit Jimiwal <amitjimiwal45@gmail.com>
+Anshu Kumar <132515490+anxhukumar@users.noreply.github.com>
 Anudeep Sanapala <anudeep0306@gmail.com>
 Athan Reines <kgryte@gmail.com>
 Ayaka <73595362+USERSATOSHI@users.noreply.github.com>
@@ -49,6 +50,7 @@ Gururaj Gurram <gururajgurram1512@gmail.com>
 Harsh <149176984+hrshya@users.noreply.github.com>
 HarshaNP <96897754+GittyHarsha@users.noreply.github.com>
 Harshita Kalani <harshitakalani02@gmail.com>
+Hemant M Mehta <92446645+hemantmm@users.noreply.github.com>
 Hridyanshu <124202756+HRIDYANSHU054@users.noreply.github.com>
 Jaimin Godhani <112328542+Jai0401@users.noreply.github.com>
 Jalaj Kumar <142599224+jalajk3004@users.noreply.github.com>