docs: update contributing, pull request template and license year (#81)

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## Description

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This PR updates the contributing file, pull request template and license
year.

## Related Issue(s)

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issue first. -->
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to reproduce. -->
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Re zk-kit/zk-kit#396

## Checklist

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- [x] I have read and understand the [contributor
guidelines](https://github.com/privacy-scaling-explorations/zk-kit.rust/blob/main/CONTRIBUTING.md)
and [code of
conduct](https://github.com/privacy-scaling-explorations/zk-kit.rust/blob/main/CODE_OF_CONDUCT.md).
- [x] I have performed a self-review of my code
- [ ] I have commented my code, particularly in hard-to-understand areas
- [x] My changes generate no new warnings
- [ ] I have run `yarn style` without getting any errors
- [ ] I have added tests that prove my fix is effective or that my
feature works
- [x] New and existing unit tests pass locally with my changes

> [!IMPORTANT]
> We do not accept minor grammatical fixes (e.g., correcting typos,
rewording sentences) unless they significantly improve clarity in
technical documentation. These contributions, while appreciated, are not
a priority for merging. If there is a grammatical mistake, please feel
free to message the team.

Author: vplasencia

.github/pull_request_template.md

@@ -38,4 +38,4 @@
 - [ ] New and existing unit tests pass locally with my changes
 
 > [!IMPORTANT]
-> We do not accept minor grammatical fixes (e.g., correcting typos, rewording sentences) unless they significantly improve clarity in technical documentation. These contributions, while appreciated, are not a priority for merging. If there is a grammatical mistake, please feel free to message the team.
+> We do not accept pull requests for minor grammatical fixes (e.g., correcting typos, rewording sentences) or for fixing broken links, unless they significantly improve clarity or functionality. These contributions, while appreciated, are not a priority for merging. If you notice any of these issues, please create a [GitHub Issue](https://github.com/privacy-scaling-explorations/zk-kit.rust/issues/new?template=BLANK_ISSUE) to report them so they can be properly tracked and addressed.

CONTRIBUTING.md

@@ -34,7 +34,7 @@ Pull requests are great if you want to add a feature or fix a bug. Here's a quic
 > When a new package is created or a new feature is added to the repository, the contributor will be added to the `.github/CODEOWNERS` file to review and approve any future changes to their code.
 
 > [!IMPORTANT]
-> We do not accept minor grammatical fixes (e.g. correcting typos, rewording sentences) unless they significantly improve clarity in technical documentation. These contributions, while appreciated, are not a priority for merging. If there is a grammatical mistake, please feel free to message the team.
+> We do not accept pull requests for minor grammatical fixes (e.g., correcting typos, rewording sentences) or for fixing broken links, unless they significantly improve clarity or functionality. These contributions, while appreciated, are not a priority for merging. If you notice any of these issues, please create a [GitHub Issue](https://github.com/privacy-scaling-explorations/zk-kit.rust/issues/new?template=BLANK_ISSUE) to report them so they can be properly tracked and addressed.
 
 ## CI (Github Actions) Tests
 

LICENSE

@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2024 Ethereum Foundation
+Copyright (c) 2025 Ethereum Foundation
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal