[COMMUNITY] @MarisaKirisame -> committer (#4645)

CONTRIBUTORS.md

@@ -46,6 +46,7 @@ We do encourage everyone to work anything they are interested in.
 - [Yuwei Hu](https://github.com/Huyuwei): @Huyuwei - topi, frontends
 - [Nick Hynes](https://github.com/nhynes): @nhynes: - sgx, rust
 - [Ziheng Jiang](https://github.com/ZihengJiang) (PPMC): @ZihengJiang - relay, compiler
+- [Marisa Kirisame](https://github.com/MarisaKirisame): @MarisaKirisame - relay
 - [Wuwei Lin](https://github.com/vinx13): @vinx13 - relay, topi
 - [Yizhi Liu](https://github.com/yzhliu) (PPMC): @yzhliu - jvm, topi, relay
 - [Hao Lu](https://github.com/hlu1): @hlu1 - nnpack, frontends