Replace text placeholder (check-in-place-select)

packages/check-in-place-select/src/i18n/de/translation.json

 {
   "check-in-place-select": {
-    "placeholder": "Bitte wählen Sie einen Ort aus",
+    "placeholder": "Z.B. \"P1\", \"Rechbauerstraße\", \"PZ2EG048\"",
     "error-summary": "Ein Fehler ist aufgetreten",
     "login-required": "Anmeldung erforderlich"
   }

packages/check-in-place-select/src/i18n/en/translation.json

 {
   "check-in-place-select": {
-    "placeholder": "Please select a location",
+    "placeholder": "E.g. \"P1\", \"Rechbauerstraße\", \"PZ2EG048\"",
     "error-summary": "An error occurred",
     "login-required": "Login required"
   }