Add Apoorv Mittal to contributors list

Author: Apoorv012

contributers.md

@@ -53,6 +53,7 @@
 | Lakshmish            | Coldesy             | IIIT Allahabad 
 |Priyanshu Ranjan        | justpriyanshu            | BIT Mesra
 | Vrajkumar Shah        | vraj826                   | DDU, Nadiad
-| Atharva Mehta          | Atharva-insane           |  IIIT Allahabad                                                  |                                               
+| Atharva Mehta          | Atharva-insane           |  IIIT Allahabad                                                  | 
+| Apoorv Mittal          | Apoorv012                |  JIIT Noida                                                  |                                               
 <!-- ADD ABOVE THIS -->
 <!-- example | Korvac | Betty | Reyansh College | -->