Translate Spanish text to English across docs and code

src/main/main.ts

@@ -146,9 +146,9 @@ process.on("exit", () => {
 });
 
 process.on("uncaughtException", (error) => {
-  showFatalError("Error inesperado en el proceso principal de Electron.", error);
+  showFatalError("Unexpected error in Electron main process.", error);
 });
 
 process.on("unhandledRejection", (reason) => {
-  showFatalError("Promesa no controlada en el proceso principal de Electron.", reason);
+  showFatalError("Unhandled promise in Electron main process.", reason);
 });