UI: Remove tabs for About error statements

And change error statements to translation key

UI/data/locale/en-US.ini

@@ -1369,6 +1369,7 @@ About.Donate="Make a Contribution"
 About.GetInvolved="Get Involved"
 About.Authors="Authors"
 About.License="License"
+About.Error="Error! File could not be read.\n\nGo to: %1"
 About.Contribute="Support the OBS Project"
 
 # Drag-drop URL

UI/window-basic-about.cpp

@@ -133,8 +133,9 @@ void OBSAbout::ShowAbout()
 void OBSAbout::ShowAuthors()
 {
 	std::string path;
-	QString error = "Error! File could not be read.\n\n \
-		Go to: https://github.com/obsproject/obs-studio/blob/master/AUTHORS";
+	QString error =
+		QTStr("About.Error")
+			.arg("https://github.com/obsproject/obs-studio/blob/master/AUTHORS");
 
 #ifdef __APPLE__
 	if (!GetDataFilePath("AUTHORS", path)) {
@@ -160,8 +161,9 @@ void OBSAbout::ShowAuthors()
 void OBSAbout::ShowLicense()
 {
 	std::string path;
-	QString error = "Error! File could not be read.\n\n \
-		Go to: https://github.com/obsproject/obs-studio/blob/master/COPYING";
+	QString error =
+		QTStr("About.Error")
+			.arg("https://github.com/obsproject/obs-studio/blob/master/COPYING");
 
 	if (!GetDataFilePath("license/gplv2.txt", path)) {
 		ui->textBrowser->setPlainText(error);