Updated copyright years.

src/main/java/org/orekit/rugged/utils/MinSelector.java

-/* Copyright 2013-2020 CS GROUP
+/* Copyright 2013-2022 CS GROUP
  * Licensed to CS GROUP (CS) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.

src/main/java/org/orekit/rugged/utils/NormalizedGeodeticPoint.java

-/* Copyright 2013-2020 CS GROUP
+/* Copyright 2013-2022 CS GROUP
  * Licensed to CS GROUP (CS) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.

src/main/java/org/orekit/rugged/utils/RoughVisibilityEstimator.java

-/* Copyright 2013-2020 CS GROUP
+/* Copyright 2013-2022 CS GROUP
  * Licensed to CS GROUP (CS) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.

src/main/java/org/orekit/rugged/utils/Selector.java

-/* Copyright 2013-2020 CS GROUP
+/* Copyright 2013-2022 CS GROUP
  * Licensed to CS GROUP (CS) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.

src/main/java/org/orekit/rugged/utils/SpacecraftToObservedBody.java

-/* Copyright 2013-2020 CS GROUP
+/* Copyright 2013-2022 CS GROUP
  * Licensed to CS GROUP (CS) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.

src/main/java/org/orekit/rugged/utils/package-info.java

-/* Copyright 2013-2020 CS GROUP
+/* Copyright 2013-2022 CS GROUP
  * Licensed to CS GROUP (CS) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.

src/site/markdown/building.md

-<!--- Copyright 2013-2020 CS GROUP
+<!--- Copyright 2013-2022 CS GROUP
   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at

src/site/markdown/configuration.md

-<!--- Copyright 2013-2020 CS GROUP
+<!--- Copyright 2013-2022 CS GROUP
   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at

src/site/markdown/contact.md

-<!--- Copyright 2013-2020 CS GROUP
+<!--- Copyright 2013-2022 CS GROUP
   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at

src/site/markdown/contributing.md

-<!--- Copyright 2013-2020 CS GROUP
+<!--- Copyright 2013-2022 CS GROUP
   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at

src/site/markdown/design/design-major-functions.md

-<!--- Copyright 2013-2020 CS GROUP
+<!--- Copyright 2013-2022 CS GROUP
   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at

src/site/markdown/design/digital-elevation-model.md

-<!--- Copyright 2013-2020 CS GROUP
+<!--- Copyright 2013-2022 CS GROUP
   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at

src/site/markdown/design/overview.md

-<!--- Copyright 2013-2020 CS GROUP
+<!--- Copyright 2013-2022 CS GROUP
   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at

src/site/markdown/design/technical-choices.md

-<!--- Copyright 2013-2020 CS GROUP
+<!--- Copyright 2013-2022 CS GROUP
   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at

src/site/markdown/downloads.md.vm

-<!--- Copyright 2013-2020 CS GROUP
+<!--- Copyright 2013-2022 CS GROUP
   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at

src/site/markdown/faq.md

-<!--- Copyright 2013-2020 CS GROUP
+<!--- Copyright 2013-2022 CS GROUP
   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at

src/site/markdown/guidelines.md

-<!--- Copyright 2013-2020 CS GROUP
+<!--- Copyright 2013-2022 CS GROUP
   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at

src/site/markdown/index.md

-<!--- Copyright 2013-2020 CS GROUP
+<!--- Copyright 2013-2022 CS GROUP
   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at

src/site/markdown/sources.md

-<!--- Copyright 2013-2020 CS GROUP
+<!--- Copyright 2013-2022 CS GROUP
   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at

src/site/markdown/tutorials/direct-location-with-DEM.md

-<!--- Copyright 2013-2020 CS GROUP
+<!--- Copyright 2013-2022 CS GROUP
   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at