docs: update list of contributors

Signed-off-by: stdlib-bot <82920195+stdlib-bot@users.noreply.github.com>

Author: Planeshifter

CONTRIBUTORS

@@ -34,6 +34,7 @@ Justin Dennison <justin1dennison@gmail.com>
 Karthik Prakash <116057817+skoriop@users.noreply.github.com>
 Khaldon <kahmd1444@gmail.com>
 Lovelin <100030865+lovelindhoni@users.noreply.github.com>
+Manik Sharma <maniksharma.rke@gmail.com>
 Marcus Fantham <mfantham@users.noreply.github.com>
 Matt Cochrane <matthew.cochrane.eng@gmail.com>
 Mihir Pandit <129577900+MSP20086@users.noreply.github.com>