Update configuration.md
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**enable-dynamic-tls-records:** Enables dynamically sized TLS records to improve time-to-first-byte. Enabled by default. See [CloudFlare's blog](https://blog.cloudflare.com/optimizing-tls-over-tcp-to-reduce-latency) for more information.
-**enable-underscores-in-headers:** Enables underscores in header names. This is disabled by default.
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**enable-underscores-in-headers:** Enables underscores in header names. This is disabled by default.
**enable-vts-status:** Allows the replacement of the default status page with a third party module named [nginx-module-vts](https://github.com/vozlt/nginx-module-vts).
