Fix several instances of doubled words

One in an exception; the rest in docblocks.
[Console] renamed ConsoleForExceptionEvent into ConsoleExceptionEvent
Merge branch '2.1' into 2.2

* 2.1:
  Fix several instances of doubled words
  [Finder] Fix iteration fails with non-rewindable streams
  [Finder] Fix unexpected duplicate sub path related AppendIterator issue
  Added type of return value in VoterInterface.
  Fixed two bugs in HttpCache

Conflicts:
	src/Symfony/Component/Finder/Tests/FinderTest.php
Merge branch '2.2' into 2.3

* 2.2:
  Fix several instances of doubled words
  [Finder] Fix iteration fails with non-rewindable streams
  [Finder] Fix unexpected duplicate sub path related AppendIterator issue
  Added type of return value in VoterInterface.
  Fixed two bugs in HttpCache

Conflicts:
	src/Symfony/Component/Finder/Iterator/RecursiveDirectoryIterator.php
merged branch Tobion/console-event-name (PR #8147)

This PR was merged into the 2.3 branch.

Discussion
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[Console] renamed ConsoleForExceptionEvent into ConsoleExceptionEvent

I wondered about the name and now I figured the problem was already raised in the PR: https://github.com/symfony/symfony/pull/7466#discussion-diff-3503539

So I think it should be fixed for LTS.

BC break: yes
test pass: yes

Commits
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554ab9f [Console] renamed ConsoleForExceptionEvent into ConsoleExceptionEvent