Fix sorted set leaderboard typo (#2656)

Author: minhhieu76qng

docs/data-types/sorted-sets.md

@@ -203,7 +203,7 @@ the #4932 best score here").
 
 ## Examples
 
-* There are two ways we can use a sorted set to represent a leaderbaord. If we know a racer's new score, we can update it directly via the `ZADD` command. However, if we want to add points to an existing score, we can use the `ZINCRBY` command.
+* There are two ways we can use a sorted set to represent a leaderboard. If we know a racer's new score, we can update it directly via the `ZADD` command. However, if we want to add points to an existing score, we can use the `ZINCRBY` command.
 {{< clients-example ss_tutorial leaderboard >}}
 > ZADD racer_scores 100 "Wood"
 (integer) 1