Document create_entry step flow translation keys (#2836)

Co-authored-by: coderabbitai[bot] <136622811+coderabbitai[bot]@users.noreply.github.com>

Author: karwosts

docs/internationalization/core.md

@@ -95,10 +95,14 @@ The example strings file below describes the different supported keys. Although
       "invalid_api_key": "This message will be displayed if `invalid_api_key` is returned as a flow error."
     },
     "abort": {
-      "stale_api_key": "This message will be displayed if `stale_api_key` is returned as the abort reason."
+      "stale_api_key": "This message will be displayed if `stale_api_key` is returned as the abort reason. Supports Markdown."
     },
     "progress": {
-      "slow_task": "This message will be displayed if `slow_task` is returned as `progress_action` for `async_show_progress`."
+      "slow_task": "This message will be displayed if `slow_task` is returned as `progress_action` for `async_show_progress`. Supports Markdown."
+    },
+    "create_entry": {
+      "default": "This message will be displayed in the success dialog if `async_create_entry` is called with `description=None`. Supports Markdown.",
+      "custom": "This message will be displayed in the success dialog if `async_create_entry` is called with `description='custom'`. Supports Markdown."
     }
   },
   "options": {