docs: fix typo, it's its not it's (#1353)

Title says it all

### PR Checklist

- [x] The PR title follows
[conventional commits](https://www.conventionalcommits.org/en/v1.0.0/)
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- [ ] Does the PR have changes to the frontend? If so, include
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<br/>If it affect colors, please include screenshots/recording in both
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<br/>And if changing dababase queries, be sure you have ran `sqlx
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      and committed the changes in the `.sqlx` directory.

Author: KnorpelSenf

frontend/docs/quotas-and-limits.md

@@ -13,7 +13,7 @@ increase, and the reason for the increase.
 
 Don't see quotas as limits. If you need more than the default quota, please
 reach out to us and we'll be happy to increase it. Quotas are in place to
-prevent abuse, not to prevent you from using JSR to it's fullest.
+prevent abuse, not to prevent you from using JSR to its fullest.
 
 ## Quotas per account