docs: Update Contributing documentation with code style details

README.md

@@ -194,6 +194,7 @@ Currently, Exposed is available for **maven/gradle builds**. Check the [Maven Ce
 For more information visit the links below:
 
 -   [Documentation](https://jetbrains.github.io/Exposed/home.html) with examples and docs
+-   [Contributing to Exposed](https://jetbrains.github.io/Exposed/contributing.html)
 -   [Migration Guide](https://jetbrains.github.io/Exposed/migration-guide.html)
 -   [Breaking changes](https://jetbrains.github.io/Exposed/breaking-changes.html) and any migration details
 -   [Slack Channel](https://kotlinlang.slack.com/messages/exposed/)

documentation-website/Writerside/topics/Contributing.md

@@ -54,7 +54,8 @@ Contributions are made using Github [pull requests](https://help.github.com/en/a
 7. If the contribution requires updates to documentation (be it updating existing contents or creating new one), please
    file a new ticket on [YouTrack](https://youtrack.jetbrains.com/issues/EXPOSED).
 8. Make sure any code contributed is covered by tests and no existing tests are broken. We use Docker containers to run tests.
-9. Finally, make sure to run the `apiCheck` Gradle task. If it's not successful, run the `apiDump` Gradle task. Further information can be
+9. Execute the `detekt` task in Gradle to perform code style validation. 
+10. Finally, make sure to run the `apiCheck` Gradle task. If it's not successful, run the `apiDump` Gradle task. Further information can be
    found [here](https://github.com/Kotlin/binary-compatibility-validator).
 
 #### Style Guides
@@ -68,6 +69,14 @@ A few things to remember:
 * Every public API (including functions, classes, objects and so on) should be documented,
   every parameter, property, return types, and exceptions should be described properly.
 
+Test functions:
+
+* Begin each test function name with the word `test`.
+* Employ camelCase for test function names, such as `testInsertEmojisWithInvalidLength`. 
+* Refrain from using names enclosed in backticks for test functions, because `KDocs` cannot reference function names that contain spaces.
+* In the definition of test functions, use a block body instead of an assignment operator. 
+  For example, do write `fun testMyTest() { withDb{} }`, and avoid writing `fun testMyTest() = withDb{}`.
+
 #### Commit messages
 
 * Commit messages should be written in English.
@@ -99,4 +108,4 @@ Before submitting an issue or feature request, please search YouTrack's existing
 When submitting an issue or feature request, please provide as much detail as possible, including a clear and concise description of the problem or
 desired functionality, steps to reproduce the issue, and any relevant code snippets or error messages.
 
-Thank you for your cooperation and for helping to improve Exposed.
+Thank you for your cooperation and for helping to improve Exposed.