Docs: Update wording / text and copy (#61868)

Co-authored-by: brendamuir <100768211+brendamuir@users.noreply.github.com>

public/locales/en-US/grafana.json

@@ -160,7 +160,7 @@
       "title": "Alert rules"
     },
     "alerting-receivers": {
-      "subtitle": "Decide how your contacts are notified when an alert fires",
+      "subtitle": "Choose how to notify your  contact points when an alert instance fires",
       "title": "Contact points"
     },
     "alerting-silences": {
@@ -191,7 +191,7 @@
       "title": "Create"
     },
     "create-alert": {
-      "title": "New alert rule"
+      "title": "Create alert rule"
     },
     "create-dashboard": {
       "title": "Dashboard"

public/locales/pseudo-LOCALE/grafana.json

@@ -577,4 +577,4 @@
       "option-tooltip": "Cľęäř şęľęčŧįőʼnş"
     }
   }
-}
+}