UI: Make welcome text links have underlines

Would love to make em' a different color but that would require going
through all the themes and im laaaazy

static/koboldai.css

@@ -2849,6 +2849,10 @@ body {
 	height: 100%;
 }
 
+#welcome_text a {
+	text-decoration: underline;
+}
+
 .welcome_text {
 	display: flex;
 	height: 100%;