chore: comments

Signed-off-by: Manik Rana <[email protected]>

model/textparse/openmetricsparse.go

@@ -653,6 +653,7 @@ func (p *OpenMetricsParser) parseLVals(offsets []int, isExemplar bool) ([]int, e
 // isCreatedSeries returns true if the current series is a _created series.
 func (p *OpenMetricsParser) isCreatedSeries() bool {
 	metricName := p.series[p.offsets[0]-p.start : p.offsets[1]-p.start]
+	// check length so the metric is longer than len("_created")
 	if typeRequiresCT(p.mtype) && len(metricName) >= 8 && string(metricName[len(metricName)-8:]) == "_created" {
 		return true
 	}