Update nodejs-agent-configuration.mdx

[tytyhibye]

per the Node Agent repo, browser monitoring is set to false by default.

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[akristen]

Hi @tytyhibye! Can you sign the CLA so we can get this merged? Thanks!

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[akristen]

Looks good!

[brnhensley]

Hye @tytyhibye would you also update the despription text:

Generate JavaScript headers for browser instrumentation. Although this defaults to true, the agent doesn't inject the browser JS code unless you have enabled browser monitoring. Even if you have enabled it and added the browser timing header, you can disable browser monitoring for your app by setting this to false.

Feel free to use this, I was going to add it to your PR, but I'm not savvy enough to push to this PR:

Generate JavaScript headers for browser instrumentation. Even when set to true, the agent doesn't inject the browser JS code unless you have enabled browser monitoring. Even if you have enabled it and added the browser timing header, you can disable browser monitoring for your app by setting this to false.

cut/paste md version

Generate JavaScript headers for browser instrumentation. Even when set to `true`, the agent doesn't inject the browser JS code unless you have [enabled browser monitoring](https://docs.newrelic.com/docs/browser/new-relic-browser/installation-configuration/adding-apps-new-relic-browser/). Even if you have enabled it and [added the browser timing header](https://docs.newrelic.com/docs/agents/nodejs-agent/supported-features/page-load-timing-nodejs/#procedures), you can [disable browser monitoring for your app](https://docs.newrelic.com/docs/agents/nodejs-agent/supported-features/page-load-timing-nodejs/#disabling) by setting this to `false`.

[brnhensley]

ha, I was seconds too late I'll make a new PR

[brnhensley]

#13955