pl-fe: change import alias so it won't change on each project rename

Signed-off-by: nicole mikołajczyk <git@mkljczk.pl>

.vscode/pl-fe.code-snippets

@@ -41,7 +41,7 @@
     "body": [
       "import React from 'react';",
       "",
-      "import { render, screen } from 'pl-fe/jest/test-helpers';",
+      "import { render, screen } from '@/jest/test-helpers';",
       "",
       "import ${1:Component} from '${2:..}';",
       "",