Restore files to previous state

Summary:
X-link: meta-pytorch/monarch#3221

These files are shared between projects and were inadvertently modified.

Reviewed By: bigfootjon

Differential Revision: D98217804

fbshipit-source-id: 9d04fdb54bac4c3e46937ad5fae5356fa4264ff5

Author: zpao

CONTRIBUTING.md

@@ -1,10 +1,13 @@
-# Contributing to tensor-layouts
+# Contributing to Meta Open Source Projects
+
 We want to make contributing to this project as easy and transparent as
 possible.
 
 ## Pull Requests
 We actively welcome your pull requests.
 
+Note: pull requests are not imported into the GitHub directory in the usual way. There is an internal Meta repository that is the "source of truth" for the project. The GitHub repository is generated *from* the internal Meta repository. So we don't merge GitHub PRs directly to the GitHub repository -- they must first be imported into internal Meta repository. When Meta employees look at the GitHub PR, there is a special button visible only to them that executes that import. The changes are then automatically reflected from the internal Meta repository back to GitHub. This is why you won't see your PR having being directly merged, but you still see your changes in the repository once it reflects the imported changes.
+
 1. Fork the repo and create your branch from `main`.
 2. If you've added code that should be tested, add tests.
 3. If you've changed APIs, update the documentation.
@@ -14,18 +17,18 @@ We actively welcome your pull requests.
 
 ## Contributor License Agreement ("CLA")
 In order to accept your pull request, we need you to submit a CLA. You only need
-to do this once to work on any of Facebook's open source projects.
+to do this once to work on any of Meta's open source projects.
 
 Complete your CLA here: <https://code.facebook.com/cla>
 
 ## Issues
 We use GitHub issues to track public bugs. Please ensure your description is
 clear and has sufficient instructions to be able to reproduce the issue.
 
-Facebook has a [bounty program](https://www.facebook.com/whitehat/) for the safe
+Meta has a [bounty program](https://www.facebook.com/whitehat/) for the safe
 disclosure of security bugs. In those cases, please go through the process
 outlined on that page and do not file a public issue.
 
 ## License
-By contributing to tensor-layouts, you agree that your contributions will be licensed
-under the LICENSE file in the root directory of this source tree.
+By contributing to this project, you agree that your contributions will be licensed
+under the LICENSE file in the root directory of this source tree.