[FIX] website: fix typo in snippets_all_drag_and_drop test

The test was introduced in [1] with a typo on the first step (which is
only there to ensure the test does contain steps).

Note: with the 15.1 forward-port, the "number of steps" check had to be
adapted because snippets were removed at [2]. This reveals however two
issues:
- Snippets which use the generic "Dynamic Snippet" as base are not
  tested by the test.
- [2] removed the s_speaker_bio snippet by mistake

Both those problems will be fixed in other PR alongside improving the
way the "number of steps" check works.

[1]: https://github.com/odoo/odoo/commit/460d5ecb926c13a79ba363f8f86442433d91bf6f
[2]: https://github.com/odoo/odoo/commit/b5c87d86cad1aa2b44f805da0b2d6635aeb85b96

closes odoo/odoo#94359

X-original-commit: 8e6a6ab532637ef9ef8d87ca4062e26b2852825a
Signed-off-by: Quentin Smetz (qsm) <qsm@odoo.com>

addons/website/static/tests/tours/snippets_all_drag_and_drop.js

@@ -67,8 +67,8 @@ tour.register("snippets_all_drag_and_drop", {
             // safety check, otherwise the test might "break" one day and
             // receive no steps. The test would then not test anything anymore
             // without us noticing it.
-            if (steps.lenth < 280) {
-                console.error("This test is not behaving as it should.");
+            if (steps.length < 270) {
+                console.error(`This test is not behaving as it should, got only ${steps.length} steps.`);
             }
         },
     },