Add VOD naming functionality to the document - 2.16

[yashtandon113]

In v2.15 and below we can start/stop the recording and follow the default naming pattern.

But in v2.16 and above, we can pass the VOD file name as well as a custom name

https://antmedia.io/rest/#/default/enableRecording

Here is the sample CURL request:

curl --location --request PUT 'https://domain:5443/LiveApp/rest/v2/broadcasts/test/recording/false?fileName=test123' \
--header 'Content-Type: application/json' \
--data ''

Add this to the documentation: https://docs.antmedia.io/guides/recording-live-streams/mp4-and-webm-recording/