fix curlHelper/isValidResponse

[swiftraccoon]

[13:15:57] curlHelper.cpp curl_transcribe_audio Received response: {"text":"Thank you for watching."}
[13:15:57] curlHelper.cpp curl_transcribe_audio Valid response received.

[swiftraccoon]

Subtitles by the Amara.org community
Transcription by CastingWords
Thanks for watching!
For more information, visit www.cbs.gov.
To find out more, go to www.fema.gov
Thank you.