Fix typo in email template env variable

Signed-off-by: WashingtonKK <washingtonkigan@gmail.com>

Author: WashingtonKK

docker/.env

@@ -277,7 +277,7 @@ SMQ_PASSWORD_RESET_URL_PREFIX=http://localhost/password-reset
 SMQ_PASSWORD_RESET_EMAIL_TEMPLATE=reset-password-email.tmpl
 SMQ_VERIFICATION_URL_PREFIX=http://localhost/verify-email
 SMQ_VERIFICATION_EMAIL_TEMPLATE=verification-email.tmpl
-SM_EMAIL_TEMPLATE=invitation.tmpl
+SMQ_EMAIL_TEMPLATE=invitation.tmpl
 
 #### Users Client Config
 SMQ_USERS_URL=users:9002