Update .env.example

Co-authored-by: Julian Gruber <[email protected]>

Author: pyropy

.env.example

@@ -1,5 +1,5 @@
 REQUEST_URL="https://example.com"
-INFLUX_METRIC="example"
+INFLUX_METRIC_NAME="example"
 INFLUX_URL="http://localhost:8086"
 INFLUX_TOKEN="example"
 INFLUX_DATABASE="example"