fix spacing in a doc diagram

doc/local-android-testing-ngrok.md

@@ -14,24 +14,24 @@ End-to-end flow when testing New Activity / silent wake on a physical Android ph
 
 ```text
 ┌─────────────────────┐     HTTPS      ┌──────────────────────┐
-│  Mac (localhost)    │ ◄───────────── │  ngrok edge           │
-│  notification-      │   tunnel       │  (public HTTPS URL)   │
+│  Mac (localhost)    │ ◄───────────── │  ngrok edge          │
+│  notification-      │   tunnel       │  (public HTTPS URL)  │
 │  wakeup-service     │                └──────────┬───────────┘
 └──────────┬──────────┘                           │
-           │                                        │ fetch
-           │ POST /notifications/refresh            │ POST /notifications/register
-           │                                        ▼
+           │                                      │ fetch
+           │ POST /notifications/refresh          │ POST /notifications/register
+           │                                      ▼
            │                             ┌──────────────────────┐
-           │                             │  crowd-funder-for-     │
-           │                             │  time-pwa (Capacitor   │
-           │                             │  Android on device)    │
+           │                             │  crowd-funder-for-   │
+           │                             │  time-pwa (Capacitor │
+           │                             │  Android on device)  │
            │                             └──────────┬───────────┘
            │                                        │
            │  FCM data message (WAKEUP_PING)        │ daily-notification-plugin
            ▼                                        ▼ (local schedule replace)
 ┌─────────────────────┐                ┌──────────────────────┐
-│  Firebase Cloud      │ ──FCM────────► │  Android device      │
-│  Messaging           │  direct        │  app.timesafari.app  │
+│  Firebase Cloud     │ ──FCM────────► │  Android device      │
+│  Messaging          │  direct        │  app.timesafari.app  │
 └─────────────────────┘                └──────────────────────┘
 ```