Correct compile fail, use .Lookup correctly.

Author: gmallard

en/07.4.md

@@ -365,13 +365,13 @@ func main() {
 
 	templates, err = template.ParseFiles(allFiles...) #parses all .tmpl files in the 'templates' folder
 
-	s1, _ := templates.LookUp("header.tmpl")
+	s1 := templates.Lookup("header.tmpl")
 	s1.ExecuteTemplate(os.Stdout, "header", nil)
 	fmt.Println()
-	s2, _ := templates.LookUp("content.tmpl")
+	s2 := templates.Lookup("content.tmpl")
 	s2.ExecuteTemplate(os.Stdout, "content", nil)
 	fmt.Println()
-	s3, _ := templates.LookUp("footer.tmpl")
+	s3 := templates.Lookup("footer.tmpl")
 	s3.ExecuteTemplate(os.Stdout, "footer", nil)
 	fmt.Println()
 	s3.Execute(os.Stdout, nil)

es/07.4.md

@@ -364,13 +364,13 @@ Código:
 
 		templates, err = template.ParseFiles(allFiles...) #parses all .tmpl files in the 'templates' folder
 
-		s1, _ := templates.LookUp("header.tmpl")
+		s1 := templates.Lookup("header.tmpl")
 		s1.ExecuteTemplate(os.Stdout, "header", nil)
 		fmt.Println()
-		s2, _ := templates.LookUp("content.tmpl")
+		s2 := templates.Lookup("content.tmpl")
 		s2.ExecuteTemplate(os.Stdout, "content", nil)
 		fmt.Println()
-		s3, _ := templates.LookUp("footer.tmpl")
+		s3 := templates.Lookup("footer.tmpl")
 		s3.ExecuteTemplate(os.Stdout, "footer", nil)
 		fmt.Println()
 		s3.Execute(os.Stdout, nil)