fix typo (#197)

Signed-off-by: clach04 <clach04@gmail.com>

wireguard/docker-compose.yaml

@@ -9,7 +9,7 @@ services:
     environment:
       - PUID=1000
       - PGID=1000
-      - TZ=${ZIMEZONE}
+      - TZ=${TIMEZONE}
       - SERVERURL=${VPN_SERVER_URL} #optional
       - SERVERPORT=51820 #optional
       - PEERS=1 #optional
@@ -24,4 +24,4 @@ services:
       - 51820:51820/udp
     sysctls:
       - net.ipv4.conf.all.src_valid_mark=1
-    restart: unless-stopped
+    restart: unless-stopped