chore: fix contribution guide link

lesnitsky · web-flow · commit 730cdaee9a84 · 2023-11-10T23:43:28.000+01:00
diff --git a/README.md b/README.md
@@ -23,4 +23,4 @@ Please file Firebase UI specific issues, bugs, or feature requests in our [issue
 
 ## Contributing
 
-If you wish to contribute a change to any of the existing plugins in this repo, please review our [contribution guide](./docs/contributing.md) and open a [pull request](https://github.com/firebase/FirebaseUI-Flutter/pulls).
+If you wish to contribute a change to any of the existing plugins in this repo, please review our [contribution guide](https://github.com/firebase/FirebaseUI-Flutter/blob/main/CONTRIBUTING.md) and open a [pull request](https://github.com/firebase/FirebaseUI-Flutter/pulls).

Original file line number	Diff line number	Diff line change
`@@ -23,4 +23,4 @@ Please file Firebase UI specific issues, bugs, or feature requests in our [issue`
`23`	`23`
`24`	`24`	`## Contributing`
`25`	`25`
`26`		`-If you wish to contribute a change to any of the existing plugins in this repo, please review our [contribution guide](./docs/contributing.md) and open a [pull request](https://github.com/firebase/FirebaseUI-Flutter/pulls).`
	`26`	`+If you wish to contribute a change to any of the existing plugins in this repo, please review our [contribution guide](https://github.com/firebase/FirebaseUI-Flutter/blob/main/CONTRIBUTING.md) and open a [pull request](https://github.com/firebase/FirebaseUI-Flutter/pulls).`