[crunchyroll] Fix json.decoder.JSONDecodeError: Extra data

[Trigus42]

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What is the purpose of your pull request?

• Bug fix

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Fix an error with the JSON decoder that occurs when webpage contains a JSON with multiple records.

For example:

Page.messaging_box_controller.addItems([{"type":"error","message_body":"Dieses Video ist in deiner Region nicht verf\u00fcgbar.","message_body_html":"Dieses Video ist in deiner Region nicht verf\u00fcgbar.","data":null},{"type":"error","message_body":"Dieses Video ist in deiner Region nicht verf\u00fcgbar.","message_body_html":"Dieses Video ist in deiner Region nicht verf\u00fcgbar.","data":null},{"type":"error","message_body":"Dieses Video ist in deiner Region nicht verf\u00fcgbar.","message_body_html":"Dieses Video ist in deiner Region nicht verf\u00fcgbar.","data":null}]);