[MMC] Use IDS_APPTITLE rather than Hardcoded text

reactos-bootcd-0.4.15-dev-4946-ge9a129c-x86-gcc-lin-dbg

https://github.com/reactos/reactos/blob/3fa57b8ff7fcee47b8e2ed869aecaf4515603f3f/base/applications/mmc/console.c#L153

SetWindowText(Info->hwnd, TEXT("ReactOS Management Console"));

while it should rely on

https://github.com/reactos/reactos/blob/3fa57b8ff7fcee47b8e2ed869aecaf4515603f3f/base/applications/mmc/lang/en-US.rc#L41

IDS_APPTITLE "ReactOS Management Console"

to correctly support translations

See how it is handled in other apps:
https://git.reactos.org/?p=reactos.git&a=search&h=HEAD&st=grep&s=String.%2BIDS_APPTITLE&sr=1