refactor: rename pressurelosslaw_params.ts to pressureloss_law_params.ts

refs #334

src/internal_modules.ts

@@ -150,7 +150,7 @@ export * from "./pipe_flow/cond_distri_params";
 export * from "./pipe_flow/pressureloss";
 export * from "./pipe_flow/pressureloss_params";
 export * from "./pipe_flow/pressureloss_law";
-export * from "./pipe_flow/pressurelosslaw_params";
+export * from "./pipe_flow/pressureloss_law_params";
 export * from "./pipe_flow/pl_lechaptcalmon";
 export * from "./pipe_flow/pl_lechaptcalmon_params";
 export * from "./prebarrage/pb_bassin";