fix(nginx): add redirects for missing trailing slashes

docker/nginx.conf

@@ -74,6 +74,10 @@ http {
         }
 
         # Grafana
+        location = /grafana {
+            return 301 /grafana/;
+        }
+
         location /grafana/ {
             rewrite ^/grafana/(.*) /$1 break;
             
@@ -91,6 +95,11 @@ http {
             proxy_set_header Connection "upgrade";
         }
 
+        # Prometheus UI
+        location = /prometheus {
+            return 301 /prometheus/;
+        }
+
         # Prometheus UI
         location /prometheus/ {
             proxy_pass http://prometheus/prometheus/;