community/mautrix-telegram: fix init script

The -m command was passed to supervise-daemon rather than to Python
7 jobs for !15193 with community_mautrix-telegram in 1 minute and 59 seconds (queued for 1 second)
detached
Status Job ID Name Coverage
  Lint
passed #260024
docker-alpine x86_64
lint

00:00:20

 
  Build
passed #260029
docker-alpine ci-build aarch64
build-aarch64

00:00:44

passed #260030
docker-alpine ci-build armv7
build-armv7

00:01:37

passed #260028
docker-alpine ci-build ppc64le
build-ppc64le

00:00:54

passed #260027
docker-alpine ci-build s390x
build-s390x

00:00:59

passed #260026
docker-alpine ci-build x86
build-x86

00:00:25

passed #260025
docker-alpine ci-build x86_64
build-x86_64

00:00:36