fix: Use json file extension for log files

Author: NickLarsenNZ

rust/operator-binary/src/main.rs

@@ -86,7 +86,7 @@ async fn main() -> anyhow::Result<()> {
                     Settings::builder()
                         .with_environment_variable(ENV_VAR_CONSOLE_LOG)
                         .with_default_level(LevelFilter::INFO)
-                        .file_log_settings_builder(log_directory, "tracing-rs.log")
+                        .file_log_settings_builder(log_directory, "tracing-rs.json")
                         .with_rotation_period(rotation_period)
                         .build()
                 }))