frontend: Fix contributing link in About

Fixes the link to the new contributing document, which is now .md and not .rst

frontend/dialogs/OBSAbout.cpp

@@ -41,9 +41,8 @@ OBSAbout::OBSAbout(QWidget *parent) : QDialog(parent), ui(new Ui::OBSAbout)
 		ui->donate->setOpenExternalLinks(true);
 	}
 
-	ui->getInvolved->setText(
-		"&nbsp;&nbsp;<a href='https://github.com/obsproject/obs-studio/blob/master/CONTRIBUTING.rst'>" +
-		QTStr("About.GetInvolved") + "</a>");
+	ui->getInvolved->setText("&nbsp;&nbsp;<a href='https://obsproject.com/developer-contributing'>" +
+				 QTStr("About.GetInvolved") + "</a>");
 	ui->getInvolved->setTextInteractionFlags(Qt::TextBrowserInteraction);
 	ui->getInvolved->setOpenExternalLinks(true);