Update MAINTAINERS.md (#703)

Signed-off-by: Lucas Steuernagel <lucas.tnagel@gmail.com>

MAINTAINERS.md

@@ -1,6 +1,7 @@
 ## Maintainers
 
 ### Active Maintainers
-| name | Github | RocketChat |
-| --- | --- | --- |
-| Sean Young | seanyoung | seanyoung |
+| name              | Github    | Discord        |
+|-------------------|-----------|----------------|
+| Sean Young        | seanyoung | seanyoung#0481 |
+| Lucas Steuernagel | LucasSte  | LucasSte#2331  |