Translate OpenAPI troubleshooting trailing slash update

[mintlify]

Summary

Translates the changes from #5478 (OpenAPI troubleshooting trailing slash tolerance) into Spanish, French, and Chinese.

• Updates es/api-playground/troubleshooting.mdx, fr/api-playground/troubleshooting.mdx, and zh/api-playground/troubleshooting.mdx to reflect the new note about automatic trailing slash resolution and the revised singular/plural path mismatch example.

Generated-By: mintlify-agent

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Note

Low Risk
Low risk documentation-only updates; no runtime code or API behavior changes.

Overview
Updates es/, fr/, and zh/ OpenAPI playground troubleshooting docs to clarify that Mintlify tolerates trailing slashes in openapi references and to add a note explaining this behavior.

Replaces the prior trailing-slash mismatch example with a singular/plural path mismatch example (/user/{id} vs /users/{id}), and softens wording from “must match exactly” to “must match” in these translations.

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