fix: Change error message

project/run2biz-challenge-front/src/app/utils/errors.ts

-import { firstLetterUpperCase } from "./string";
-
 export type Error = {
   fieldName: string;
   message: string;
@@ -11,7 +9,7 @@ export function showError(errors: Error[]) {
       alert('Erro!\nEsse e-mail já foi cadastrado por outro usuário!');
     }
     if (error.fieldName.includes('cpf')) {
-      alert(`Erro!\n${firstLetterUpperCase(error.message)}!`);
+      alert(`Erro!\nNúmero de CPF inválido!`);
     }
   });
 }

project/run2biz-challenge-front/src/app/utils/string.ts

-function firstLetterUpperCase(str: string) {
-  return str.replace(/^\w/, (c) => c.toUpperCase());
-}
-
 function formatCpf(event: Event) {
   let value = (event.target as HTMLInputElement).value;
   value = value.replace(/\D/g, '');
@@ -11,4 +7,4 @@ function formatCpf(event: Event) {
   (event.target as HTMLInputElement).value = value;
 }
 
-export { firstLetterUpperCase, formatCpf }
+export { formatCpf }