corrected robots.txt

[mkbansal1]

Please always provide the GitHub issue(s) your PR is for, as well as test URLs where your change can be observed (before and after):

Fix #148

Test URLs:

• Before: https://main--fonterra-fernleaf--hlxsites.hlx.page/en
• After: https://148-robotstxt--fonterra-fernleaf--hlxsites.hlx.live/en

[aem-code-sync[bot]]

Hello, I'm Franklin Bot and I will run some test suites that validate the page speed. In case there are problems, just click the checkbox below to rerun the respective action.

• [ ] Re-run PSI Checks

[aem-code-sync[bot]]

Page	Scores	Audits	Google
/en