Update influxdb3-cli.md

Add --file flag

Author: abalone23

content/shared/influxdb3-write-guides/influxdb3-cli.md

@@ -140,7 +140,7 @@ home,room=Kitchen temp=22.8,hum=36.5,co=1i 1641042000'
     influxdb3 write \
       --database DATABASE_NAME \
       --token AUTH_TOKEN \
-      ./home.lp
+      --file ./home.lp
     ```
 
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