fix: Apply suggestions from code review

Author: trgwii

plugins/outputs/redistimeseries/README.md

@@ -42,8 +42,7 @@ to use them.
   # timeout = "10s"
 
   ## Send an expire command to redis following the metric
-  ## Effectively causing redis to forget old values after a specific duration
-  ## Omit this field to never expire values
+  ## If set, Redis will drop the metric after the specified duration
   # expire = "300s"
 
   ## Enable attempt to convert string fields to numeric values

plugins/outputs/redistimeseries/redistimeseries.go

@@ -110,8 +110,7 @@ func (r *RedisTimeSeries) Write(metrics []telegraf.Metric) error {
 			if r.Expire != nil {
 				pipe.Expire(ctx, key, time.Duration(*r.Expire))
 			}
-			_, err := pipe.Exec(ctx)
-			if err != nil {
+			if _, err := pipe.Exec(ctx); err != nil {
 				return fmt.Errorf("adding sample %q failed: %w", key, err)
 			}
 		}

plugins/outputs/redistimeseries/sample.conf

@@ -12,8 +12,7 @@
   # timeout = "10s"
 
   ## Send an expire command to redis following the metric
-  ## Effectively causing redis to forget old values after a specific duration
-  ## Omit this field to never expire values
+  ## If set, Redis will drop the metric after the specified duration
   # expire = "300s"
 
   ## Enable attempt to convert string fields to numeric values