Fix: Refactor Prometheus timer metric name format

Updated the Prometheus timer metric string format to align with naming conventions. This change ensures consistency by placing 'total' at the end of the metric name.

Signed-off-by: Christian Roessner <c@roessner.co>

server/core/http.go

@@ -600,7 +600,7 @@ func prometheusMiddleware() gin.HandlerFunc {
 			mode = "auth"
 		}
 
-		stopTimer := stats.PrometheusTimer(global.PromRequest, fmt.Sprintf("request_total_%s", strings.ReplaceAll(mode, "-", "_")))
+		stopTimer := stats.PrometheusTimer(global.PromRequest, fmt.Sprintf("request_%s_total", strings.ReplaceAll(mode, "-", "_")))
 		path := ctx.FullPath()
 
 		if config.LoadableConfig.Server.PrometheusTimer.Enabled {