[FIX] package: Fix typo in module key

The filename in the key `module` from `package.json` did not match
the actual file generated with rollup.

closes #4814

Task: 0
X-original-commit: 9adec36
Signed-off-by: Lucas Lefèvre (lul) <lul@odoo.com>
Signed-off-by: Rémi Rahir (rar) <rar@odoo.com>

package.json

@@ -4,7 +4,7 @@
   "description": "A spreadsheet component",
   "main": "dist/o-spreadsheet.cjs.js",
   "browser": "dist/o-spreadsheet.iife.js",
-  "module": "dist/o-spreadsheet.es.js",
+  "module": "dist/o-spreadsheet.esm.js",
   "types": "dist/o-spreadsheet.d.ts",
   "files": [
     "dist/*.js",