Update CONTRIBUTING.md

Author: spavlusieva

CONTRIBUTING.md

@@ -1,38 +1,55 @@
-# Contributing
+# Contributing to this repository
 
 We welcome your contributions! There are multiple ways to contribute.
 
-## Issues
+## Opening issues
 
-For bugs or enhancement requests, please file a GitHub issue unless it's security related. When filing a bug remember that the better written the bug is, the more likely it is to be fixed. If you think you've found a security vulnerability, do not raise a GitHub issue and follow the instructions on our [Security Policy]().
+For bugs or enhancement requests, please file a GitHub issue unless it's
+security related. When filing a bug remember that the better written the bug is,
+the more likely it is to be fixed. If you think you've found a security
+vulnerability, do not raise a GitHub issue and follow the instructions in our
+[security policy](./SECURITY.md).
 
-## Contributing Code
+## Contributing code
 
-We welcome your code contributions. To get started, you will need to sign the [Oracle Contributor Agreement](https://www.oracle.com/technetwork/community/oca-486395.html) (OCA).
+We welcome your code contributions. Before submitting code via a pull request,
+you will need to have signed the [Oracle Contributor Agreement][OCA] (OCA) and
+your commits need to include the following line using the name and e-mail
+address you used to sign the OCA:
 
-For pull requests to be accepted, the bottom of your commit message must have the following line using the name and e-mail address you used for the OCA.
-
-```
+```text
 Signed-off-by: Your Name <[email protected]>
 ```
 
-This can be automatically added to pull requests by committing with:
+This can be automatically added to pull requests by committing with `--sign-off`
+or `-s`, e.g.
 
-```
+```text
 git commit --signoff
 ```
 
-Only pull requests from committers that can be verified as having signed the OCA can be accepted.
+Only pull requests from committers that can be verified as having signed the OCA
+can be accepted.
+
+## Pull request process
 
-### Pull request process
+1. Ensure there is an issue created to track and discuss the fix or enhancement
+   you intend to submit.
+1. Fork this repository.
+1. Create a branch in your fork to implement the changes. We recommend using
+   the issue number as part of your branch name, e.g. `1234-fixes`.
+1. Ensure that any documentation is updated with the changes that are required
+   by your change.
+1. Ensure that any samples are updated if the base image has been changed.
+1. Submit the pull request. *Do not leave the pull request blank*. Explain exactly
+   what your changes are meant to do and provide simple steps on how to validate.
+   your changes. Ensure that you reference the issue you created as well.
+1. We will assign the pull request to 2-3 people for review before it is merged.
 
-1. Fork this repository
-2. Create a branch in your fork to implement the changes. We recommend using the issue number as part of your branch name, e.g. `1234-fixes`
-3. Ensure that any documentation is updated with the changes that are required by your fix.
-4. Ensure that any samples are updated if the base image has been changed.
-5. Submit the pull request. *Do not leave the pull request blank*. Explain exactly what your changes are meant to do and provide simple steps on how to validate your changes. Ensure that you reference the issue you created as well.
-6. We will assign the pull request to 2-3 people for review before it is merged.
+## Code of conduct
 
-## Code of Conduct
+Follow the [Golden Rule](https://en.wikipedia.org/wiki/Golden_Rule). If you'd
+like more specific guidelines, see the [Contributor Covenant Code of Conduct][COC].
 
-Follow the [Golden Rule](https://en.wikipedia.org/wiki/Golden_Rule). If you'd like more specific guidelines see the [Contributor Covenant Code of Conduct](https://www.contributor-covenant.org/version/1/4/code-of-conduct/)
+[OCA]: https://oca.opensource.oracle.com
+[COC]: https://www.contributor-covenant.org/version/1/4/code-of-conduct/