doc: Add missing contributors for v2.10.0 (closes #5136) (#5139)

* closes #5136
* doc: add missing contributor handles to v2.10.0 CHANGELOG
* add missing author to AUTHORS
* add @Aryaman-Chaudhri to package/AUTHORS and CHANGELOG

---------

Co-authored-by: Oliver Beckstein <orbeckst@gmail.com>

Author: Aryaman-Chaudhri

package/AUTHORS

@@ -267,6 +267,7 @@ Chronological list of authors
   - Shreejan Dolai
   - Tanisha Dubey
   - Brady Johnston
+  - Pradyumn-cloud
 2026
   - Mohammad Ayaan
   - Khushi Phougat
@@ -282,6 +283,7 @@ Chronological list of authors
   - Charity Grey
   - Sai Udayagiri
   - Apoorva Verma
+  - Aryaman Chaudhri
 
 External code
 -------------
@@ -329,4 +331,4 @@ Logo
 
 The MDAnalysis 'Atom' logo was designed by Christian Beckstein; it is
 Copyright (c) 2011 Christian Beckstein and made available under a
-Creative Commons Attribution-NoDerivs 3.0 Unported License.
+Creative Commons Attribution-NoDerivs 3.0 Unported License.

package/CHANGELOG

@@ -18,7 +18,7 @@ The rules for this file:
          spyke7, talagayev, tanii1125, BradyAJohnston, hejamu, jeremyleung521,
          harshitgajjela-droid, kunjsinha, aygarwal, jauy123, Dreamstick9,
          ollyfutur, Amarendra22, charity-g, ParthUppal523, apoorva-01, RMeli,
-         raulloiscuns
+         raulloiscuns, Aryaman-Chaudhri
 
  * 2.11.0
 
@@ -107,7 +107,8 @@ Deprecations
 10/18/25 IAlibay, orbeckst, BHM-Bob, TRY-ER, Abdulrahman-PROG, pbuslaev,
          yuxuanzhuang, yuyuan871111, tanishy7777, tulga-rdn, Gareth-elliott,
          hmacdope, tylerjereddy, cbouy, talagayev, DrDomenicoMarson, amruthesht,
-         p-j-smith, gitzhangch, raulloiscuns
+         p-j-smith, gitzhangch, raulloiscuns, lexi-x, namiroues, jpkrowe, schuhmc,
+         gitsirsha, Pradyumn-cloud
 
  * 2.10.0