chore: remove generation date from markdown

This commit removes the generation date from the metrics markdown file.

Signed-off-by: vprashar2929 <[email protected]>

Author: vprashar2929

docs/metrics/metrics.md

@@ -246,4 +246,4 @@ Additional metrics provided by Kepler.
 
 ---
 
-This documentation was automatically generated by the gen-metric-docs tool. Generated on 2025-06-12
+This documentation was automatically generated by the gen-metric-docs tool.

hack/gen-metric-docs/main.go

@@ -12,7 +12,6 @@ import (
 	"regexp"
 	"sort"
 	"strings"
-	"time"
 
 	"github.com/prometheus/client_golang/prometheus"
 	"github.com/sustainable-computing-io/kepler/internal/exporter/prometheus/collector"
@@ -204,7 +203,8 @@ func generateMarkdown(metrics []MetricInfo) string {
 	}
 
 	md.WriteString("---\n\n")
-	md.WriteString(fmt.Sprintf("This documentation was automatically generated by the gen-metric-docs tool. Generated on %s\n", time.Now().Format("2006-01-02")))
+	md.WriteString("This documentation was automatically generated by the gen-metric-docs tool.")
+	md.WriteString("\n")
 	return md.String()
 }