Updated issue/PR templates (#6)

Updated templates

.github/ISSUE_TEMPLATE.md

@@ -1,11 +1,5 @@
-<!---
-Copyright (C) 2020-2021 Intel Corporation
-
-SPDX-License-Identifier: MIT
--->
-
 ### My actions before raising this issue
-- [ ] Read/searched [the docs](https://github.com/opencv/cvat/tree/master#documentation)
+- [ ] Read/searched [the docs](https://github.com/cvat-ai/cvat/tree/master#documentation)
 - [ ] Searched [past issues](/issues)
 
 <!--- Provide a general summary of the issue in the Title above -->
@@ -49,5 +43,3 @@ the bug in -->
     <summary>Logs from `cvat` container</summary>
     </details>
 
-### Next steps
-You may [join our Gitter](https://gitter.im/opencv-cvat/public) channel for community support.

.github/PULL_REQUEST_TEMPLATE.md

@@ -1,13 +1,7 @@
-<!---
-Copyright (C) 2020-2022 Intel Corporation
-
-SPDX-License-Identifier: MIT
--->
-
-<!-- Raised an issue to propose your change (https://github.com/opencv/cvat/issues).
+<!-- Raised an issue to propose your change (https://github.com/cvat-ai/cvat/issues).
 It helps to avoid duplication of efforts from multiple independent contributors.
 Discuss your ideas with maintainers to be sure that changes will be approved and merged.
-Read the [CONTRIBUTION](https://github.com/opencv/cvat/blob/develop/CONTRIBUTING.md)
+Read the [CONTRIBUTION](https://github.com/cvat-ai/cvat/blob/develop/CONTRIBUTING.md)
 guide. -->
 
 <!-- Provide a general summary of your changes in the Title above -->
@@ -28,24 +22,18 @@ If an item isn't applicable by a reason then ~~explicitly strikethrough~~ the wh
 line. If you don't do that github will show an incorrect process for the pull request.
 If you're unsure about any of these, don't hesitate to ask. We're here to help! -->
 - [ ] I submit my changes into the `develop` branch
-- [ ] I have added a description of my changes into [CHANGELOG](https://github.com/opencv/cvat/blob/develop/CHANGELOG.md) file
+- [ ] I have added a description of my changes into [CHANGELOG](https://github.com/cvat-ai/cvat/blob/develop/CHANGELOG.md) file
 - [ ] I have updated the [documentation](
-  https://github.com/opencv/cvat/blob/develop/README.md#documentation) accordingly
+  https://github.com/cvat-ai/cvat/blob/develop/README.md#documentation) accordingly
 - [ ] I have added tests to cover my changes
 - [ ] I have linked related issues ([read github docs](
   https://help.github.com/en/github/managing-your-work-on-github/linking-a-pull-request-to-an-issue#linking-a-pull-request-to-an-issue-using-a-keyword))
-- [ ] I have increased versions of npm packages if it is necessary ([cvat-canvas](https://github.com/opencv/cvat/tree/develop/cvat-canvas#versioning),
-[cvat-core](https://github.com/opencv/cvat/tree/develop/cvat-core#versioning), [cvat-data](https://github.com/opencv/cvat/tree/develop/cvat-data#versioning) and [cvat-ui](https://github.com/opencv/cvat/tree/develop/cvat-ui#versioning))
+- [ ] I have increased versions of npm packages if it is necessary ([cvat-canvas](https://github.com/cvat-ai/cvat/tree/develop/cvat-canvas#versioning),
+[cvat-core](https://github.com/cvat-ai/cvat/tree/develop/cvat-core#versioning), [cvat-data](https://github.com/cvat-ai/cvat/tree/develop/cvat-data#versioning) and [cvat-ui](https://github.com/cvat-ai/cvat/tree/develop/cvat-ui#versioning))
 
 ### License
 
 - [ ] I submit _my code changes_ under the same [MIT License](
-  https://github.com/opencv/cvat/blob/develop/LICENSE) that covers the project.
+  https://github.com/cvat-ai/cvat/blob/develop/LICENSE) that covers the project.
   Feel free to contact the maintainers if that's a concern.
-- [ ] I have updated the license header for each file (see an example below)
-
-```python
-# Copyright (C) 2022 Intel Corporation
-#
-# SPDX-License-Identifier: MIT
-```
+