docs: update list of contributors

PR-URL: 	#1127
Co-authored-by: Athan Reines <kgryte@gmail.com>
Reviewed-by: Athan Reines <kgryte@gmail.com>

Author: stdlib-bot

CONTRIBUTORS

@@ -29,6 +29,7 @@ Ognjen Jevremović <ognjenjevremovic@users.noreply.github.com>
 Philipp Burckhardt <pburckhardt@outlook.com>
 Pranav Goswami <goswami.4@iitj.ac.in>
 Ricky Reusser <rsreusser@gmail.com>
+Robert Gislason <gztown2216@yahoo.com>
 Roman Stetsyk <25715951+romanstetsyk@users.noreply.github.com>
 Ryan Seal <splrk@users.noreply.github.com>
 Seyyed Parsa Neshaei <spneshaei@users.noreply.github.com>
@@ -37,4 +38,3 @@ Stephannie Jiménez Gacha <steff456@hotmail.com>
 Yernar Yergaziyev <yernar.yergaziyev@erg.kz>
 orimiles5 <97595296+orimiles5@users.noreply.github.com>
 rei2hu <reimu@reimu.ws>
-Robert Gislason <gztown2216@yahoo.com>