Fix typo

Author: adircoh

pages/api/live-game-data/supported-games/once-human.mdx

@@ -82,7 +82,7 @@ Data Example:
 Event       | Event Data   | Fired When    | Notes                                  | Since GEP Ver. |
 ------------| -------------| --------------| -------------------------------------- | ---------------|
 knockout |  nulll            | When the local player is knockout| See [notes](#knockout-note) |259.0|
-levelUp |   nulll            | When the local player level up| See [notes](#levelUp-note) |259.0|
+level_up |   nulll            | When the local player level up| See [notes](#level_up-note) |259.0|
 match_start |  nulll            | In the beginning of each match| See [notes](#match_start-note) |259.0|
 match_end   |  nulll            | At the end of each match| See [notes](#match_end-note) |259.0|
 
@@ -94,12 +94,12 @@ Data Example:
 {"events":[{"name":"knockout","data":null}]}
 ```
 
-#### *levelUp* note
+#### *level_up* note
 
 Data Example:
 
 ```json
-{"events":[{"name":"levelUp","data":null}]}
+{"events":[{"name":"level_up","data":null}]}
 ```
 
 #### *match_start* note