fix(curriculum): remove periods from answers in audio/video apis challenge (freeCodeCamp#63968)

Author: FerSuaiden

curriculum/challenges/english/blocks/lecture-working-with-audio-and-video/6733d8606fb893099e3d0df3.md

@@ -99,27 +99,27 @@ Which API allows you to pass a user's webcam feed directly to a `video` element'
 
 ## --answers--
 
-Screen Capture API.
+Screen Capture API
 
 ### --feedback--
 
 This core API extends the behavior of media sources.
 
 ---
 
-MediaStream Recording API.
+MediaStream Recording API
 
 ### --feedback--
 
 This core API extends the behavior of media sources.
 
 ---
 
-Media Source Extensions API.
+Media Source Extensions API
 
 ---
 
-Web Audio API.
+Web Audio API
 
 ### --feedback--