docs: remove repetitive words (#6568)

remove repetitive words

tortoise/recover.go

@@ -42,7 +42,7 @@ func Recover(
 	if size := trtl.cfg.WindowSizeLayers(applied); applied > size {
 		// we want to emulate the same condition as during genesis with one difference.
 		// genesis starts with zero opinion (aggregated hash) - see computeOpinion method.
-		// but in this case first processed layer should use non-zero opinion of the the previous layer.
+		// but in this case first processed layer should use non-zero opinion of the previous layer.
 
 		window := applied - size
 		// we start tallying votes from the first layer of the epoch to guarantee that we load reference ballots.