chore: Update security issue notification (#237)

* chore: Update security issue notification

This should be at the top of the contributing page,
and should be linked at the top of the readme.

* Update README.rst

Co-Authored-By: Matt Bullock <[email protected]>

* docs: update CONTRIBUTING.md

Co-Authored-By: June Blender <[email protected]>

Co-authored-by: Matt Bullock <[email protected]>
Co-authored-by: June Blender <[email protected]>

Author: 3 people

CONTRIBUTING.md

@@ -7,6 +7,10 @@ Please read through this document before submitting any issues or pull requests
 information to effectively respond to your bug report or contribution.
 
 
+## Security issue notifications
+If you discover a potential security issue in this project, notify AWS/Amazon Security by using our [vulnerability reporting page](http://aws.amazon.com/security/vulnerability-reporting/). Please do **not** create a public GitHub issue.
+
+
 ## Reporting Bugs/Feature Requests
 
 We welcome you to use the GitHub issue tracker to report bugs or suggest features.
@@ -50,10 +54,6 @@ For more information see the [Code of Conduct FAQ](https://aws.github.io/code-of
 [email protected] with any additional questions or comments.
 
 
-## Security issue notifications
-If you discover a potential security issue in this project we ask that you notify AWS/Amazon Security via our [vulnerability reporting page](http://aws.amazon.com/security/vulnerability-reporting/). Please do **not** create a public github issue.
-
-
 ## Licensing
 
 See the [LICENSE](https://github.com/aws/aws-encryption-sdk-python/blob/master/LICENSE) file for our project's licensing. We will ask you to confirm the licensing of your contribution.

README.rst

@@ -30,6 +30,8 @@ The latest full documentation can be found at `Read the Docs`_.
 
 Find us on `GitHub`_.
 
+`Security issue notifications`_
+
 ***************
 Getting Started
 ***************
@@ -259,3 +261,4 @@ to your use-case in order to obtain peak performance.
 .. _standard means by which boto3 locates credentials: https://boto3.readthedocs.io/en/latest/guide/configuration.html
 .. _final message: https://docs.aws.amazon.com/encryption-sdk/latest/developer-guide/message-format.html
 .. _encryption context: https://docs.aws.amazon.com/kms/latest/developerguide/concepts.html#encrypt_context
+.. _Security issue notifications: ./CONTRIBUTING.md#security-issue-notifications