Update comments/docs to match code

src/connection.hpp

@@ -196,17 +196,17 @@ struct Connection {
    * Use cases:
    * ```cpp
    * // Check if all data has been sent
-   * if (conn->outgoingBytesQueued() == 0) {
+   * if (conn->outgoing_bytes_queued() == 0) {
    *     conn->reset();  // Safe to reset arena
    * }
    *
    * // Implement backpressure
-   * if (conn->outgoingBytesQueued() > MAX_BUFFER_SIZE) {
+   * if (conn->outgoing_bytes_queued() > MAX_BUFFER_SIZE) {
    *     // Stop adding more data until queue drains
    * }
    *
    * // Logging/monitoring
-   * metrics.recordQueueDepth(conn->get_id(), conn->outgoingBytesQueued());
+   * metrics.recordQueueDepth(conn->get_id(), conn->outgoing_bytes_queued());
    * ```
    */
   int64_t outgoing_bytes_queued() const {