### What
<!-- Added deep linking for the sign up page-->
- <!-- Changed x to achieve y -->
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Please name your pull request following this scheme: `type: What you did` this allows us to automatically generate the changelog
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### Screenshot
<!-- Insert a screenshot to provide visual record of your changes, if visible -->

### Fixes bug(s)
<!-- change by appropriate issues. -->
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- Fixes: <!-- openfoodfacts#1 Note: you can also use Closes: -->

### Part of
- openfoodfacts#525 <!-- Add the most granular issue possible -->