fix(curriculum): camel case Audio constructor property (freeCodeCamp#61853)

Author: Supravisor

curriculum/challenges/english/25-front-end-development/review-javascript-audio-and-video/6723cf27c6e9a0c3f3041385.md

@@ -33,7 +33,7 @@ function pauseAudio() {
 
 The `Audio()` constructor has properties just as it has methods. Those properties include:
 
-- `currenttime`: for getting the current playback time of an audio
+- `currentTime`: for getting the current playback time of an audio
 - `loop`: for making the audio play continuously by automatically restarting when it reaches the end
 - `muted`: for silencing the audio output of a media element regardless of volume setting