New commands: add docs to end()

[Starlight220]

helps #2441

[AustinShalit]

You also need to update the year in the copyright header.

[AustinShalit]

Build is failing because:

https://dev.azure.com/wpilib/wpilib/_build/results?buildId=11603&view=logs&j=22fea640-1099-5f32-ec5d-316ad83f359a&t=67082dda-a192-5384-c7c3-5295d6656bc0&l=231

/__w/1/s/wpilibNewCommands/src/main/java/edu/wpi/first/wpilibj2/command/Command.java:40: error: reference not found
   *<p>Do not schedule commands here that share requirements with this command. Use {@link #andThen(Command)} instead.

I think the link needs to be {@link #andThen(Command...)}

[AustinShalit]

[ant:checkstyle] [ERROR] /Users/runner/runners/2.165.2/work/1/s/wpilibNewCommands/src/main/java/edu/wpi/first/wpilibj2/command/Command.java:40: Line is longer than 100 characters (found 121). [LineLength]

You should be able to check these by running ./gradlew check on your computer.

[Starlight220]

I am simply looking at the check pipeline logs and commit a fix. The pipelines are automatically run when I add a commit. But thanks for the tip!

[AustinShalit]

Looks like you have a trailing space.

[Starlight220]

Where is the trailing space?