Add license to files (#3301)

Summary:
These files were created as part of the website upgrade but are missing licensing headers.

Pull Request resolved: #3301

Reviewed By: saitcakmak

Differential Revision: D69053579

Pulled By: CristianLara

fbshipit-source-id: b187e84ed01ba81b476bb891bffbac2cf8ee452e

sphinx/source/_static/custom.css

@@ -1,3 +1,10 @@
-.wy-nav-content {
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+ .wy-nav-content {
   max-width: initial;
 }

website/docusaurus.config.js

@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 import {themes as prismThemes} from 'prism-react-renderer';
 import remarkMath from 'remark-math';
 import rehypeKatex from 'rehype-katex';

website/src/css/customTheme.css

@@ -1,4 +1,11 @@
-:root{
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+ :root{
   /* --ifm-color-primary-lightest: #283442;
   --ifm-color-primary-lighter: #242E3B;
   --ifm-color-primary-light: #222C38; */