docs: add Aayush Khanna as a core contributor

PR-URL: #5388
Co-authored-by: Athan Reines <kgryte@gmail.com>
Reviewed-by: Athan Reines <kgryte@gmail.com>

Author: Planeshifter

CORE_CONTRIBUTORS.md

@@ -31,6 +31,7 @@ For information about the governance of the stdlib project, see [GOVERNANCE.md][
 -   [gunjjoshi][gunj-joshi-github] - **Gunj Joshi** <[gunjjoshi8372@gmail.com][gunj-joshi-email]> (he/him)
 -   [headlessNode][muhammad-haris-github] - **Muhammad Haris** <[harriskhan047@outlook.com][muhammad-haris-email]> (he/him)
 -   [aman-095][aman-bhansali-github] - **Aman Bhansali** <[amanbhansali65@gmail.com][aman-bhansali-email]> (he/him)
+-   [aayush0325][aayush-khanna-github] - **Aayush Khanna** <[aayushiitbhu23@gmail.com][aayush-khanna-email]> (he/him)
 
 <details>
 <summary>Emeriti</summary>
@@ -67,6 +68,10 @@ For information about the governance of the stdlib project, see [GOVERNANCE.md][
 
 [aman-bhansali-email]: mailto:amanbhansali65@gmail.com
 
+[aayush-khanna-github]: https://github.com/aayush0325
+
+[aayush-khanna-email]: mailto:aayushiitbhu23@gmail.com
+
 </section>
 
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