Documentation Error: apiKey should not be quoted.

[scottdfedorov]

In the documentation, the output shows that you need to enter "apiKey" => "key" in the opsgenie output section. However, this is incorrect. If "apiKey" is quoted, the configuration fails to load:
[2020-04-02T09:21:47,728][DEBUG][logstash.plugins.registry] On demand adding plugin to the registry {:name=>"opsgenie", :type=>"output", :class=>LogStash::Outputs::OpsGenie} [2020-04-02T09:21:47,744][ERROR][logstash.outputs.opsgenie] Unknown setting '"apiKey"' for opsgenie [2020-04-02T09:21:47,775][FATAL][logstash.runner ] The given configuration is invalid. Reason: Unable to configure plugins: (ConfigurationError) Something is wrong with your configuration.

The correct output section is:
output{ opsgenie{ apiKey => "key" } }