fixed texts

Signed-off-by: Stephan Richter <s.richter@srsoftware.de>

src/main/java/de/srsoftware/widerhall/web/TemplateServlet.java

@@ -52,7 +52,7 @@ public abstract class TemplateServlet extends HttpServlet {
                 resp.getWriter().println(template.render());
                 return null;
             } catch (IOException e) {
-                return t("Failed to load template '{}'",path);
+                return t("Failed to load template '{}'!",path);
             }
         }
         return t("No template for path '{}'!",path);