Update php-agent-configuration.mdx

Updated config option from incorrect name:

newrelic.application_logging.forward.enabled 

to correct name:

newrelic.application_logging.forwarding.enabled

(Correct name shown a few lines below this)

src/content/docs/apm/agents/php-agent/configuration/php-agent-configuration.mdx

@@ -1553,7 +1553,7 @@ Keep in mind that changing your settings in your local agent configuration file
 
 If you're using a [supported logging framework](/docs/logs/logs-context/configure-logs-context-php), you can direct the agent to forward your app logs to New Relic.
 
-* `newrelic.application_logging.forward.enabled` enables or disables log forwarding
+* `newrelic.application_logging.forwarding.enabled` enables or disables log forwarding
 * `newrelic.application_logging.forwarding.max_samples_stored` limits how many logs your app forwards to New Relic
 * `newrelic.application_logging.forwarding.log_level` lets you choose what kinds of logs your app forwards to New Relic