fix: Correct typographical errors in "create-api.md" and "troubleshoot.md"

[cypherpepe]

Description

• Fixed typographical errors in the "create-api.md" and "troubleshoot.md" files.
• In "create-api.md", corrected the word "seperate" to "separate".
• In "troubleshoot.md", corrected the word "of" (which was extra) in the sentence "might be for of one of the following reasons."

Issue(s) fixed

• There are no specific issue numbers mentioned, but this can be linked to issues related to typographical errors in the documentation.

Preview

• The changes have been previewed in the respective documentation files.

Checklist

• If this PR contains a major change to the documentation content, I have added an entry to the top of the "What's new?" page.
• The proposed changes have been reviewed and approved by a member of the documentation team.

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Name	Status	Preview	Comments	Updated (UTC)
metamask-docs	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Nov 15, 2024 9:04pm