fix: update Stores links

[vil02]

Description

Some of the Stores links are broken, e.g.:

• https://github.com/openfga/java-sdk/blob/4947d98a11711eddfbde88caacf36af77da5dcbd/README.md?plain=1#L250
• https://github.com/openfga/java-sdk/blob/4947d98a11711eddfbde88caacf36af77da5dcbd/README.md?plain=1#L268
• https://github.com/openfga/java-sdk/blob/4947d98a11711eddfbde88caacf36af77da5dcbd/README.md?plain=1#L291
• https://github.com/openfga/java-sdk/blob/4947d98a11711eddfbde88caacf36af77da5dcbd/README.md?plain=1#L308

Similarly in go-sdk, python-sdk, and dotned-sdk.

References

Review Checklist

• I have clicked on "allow edits by maintainers".
• I have added documentation for new/changed functionality in this PR or in a PR to openfga.dev [Provide a link to any relevant PRs in the references section above]
• The correct base branch is being used, if not main
• I have added tests to validate that the change in functionality is working as expected

[linux-foundation-easycla]

• ✅login: vil02 / (45211fc)

The committers listed above are authorized under a signed CLA.

[ewanharris]

Thanks @vil02!