Add comma in gallery link messages (#6304)

* Initial plan

* Add comma between gallery and visit in PrintGalleryLinks messages

Author: Copilot

cli/azd/pkg/templates/template_manager.go

@@ -260,9 +260,9 @@ func PromptTemplate(
 // PrintGalleryLinks prints the template gallery banner message to the given writer.
 func PrintGalleryLinks(w io.Writer) {
 	fmt.Fprintln(w)
-	fmt.Fprintln(w, "For Microsoft AI Gallery visit",
+	fmt.Fprintln(w, "For Microsoft AI Gallery, visit",
 		output.WithLinkFormat("https://azure.github.io/ai-app-templates"))
-	fmt.Fprintln(w, "For azd community gallery (awesome-azd) visit",
+	fmt.Fprintln(w, "For azd community gallery (awesome-azd), visit",
 		output.WithLinkFormat("https://azure.github.io/awesome-azd"))
 	fmt.Fprintln(w)
 }