RFR: 8285306: Fix typos in java.desktop [v3]

[Magnus Ihse Bursie]

> I ran `codespell` on the `src/java.desktop` directory, and accepted those changes where it indeed discovered real typos.
> 
> I ignored typos in public methods and variables. Maybe they can be fixed later on without much fanfare, if they are in internal classes. Typos in exposed APIs are likely here to stay.
> 
> I will update copyright years using a script before pushing (otherwise like every second change would be a copyright update, making reviewing much harder).
> 
> The long term goal here is to make tooling support for running `codespell`. The trouble with automating this is of course all false positives. But before even trying to solve that issue, all true positives must be fixed. Hence this PR.

Magnus Ihse Bursie has updated the pull request incrementally with four additional commits since the last revision:

 - Update src/java.desktop/share/classes/javax/swing/JLayeredPane.java
   
   Co-authored-by: Alexey Ivanov <70774172+aivanov-jdk at users.noreply.github.com>
 - Update src/java.desktop/share/classes/javax/swing/JLayeredPane.java
   
   Co-authored-by: Alexey Ivanov <70774172+aivanov-jdk at users.noreply.github.com>
 - Update src/java.desktop/share/classes/javax/swing/JCheckBox.java
   
   Co-authored-by: Alexey Ivanov <70774172+aivanov-jdk at users.noreply.github.com>
 - Update src/java.desktop/share/classes/javax/swing/DefaultRowSorter.java
   
   Co-authored-by: Alexey Ivanov <70774172+aivanov-jdk at users.noreply.github.com>

-------------

Changes:
  - all: https://git.openjdk.java.net/jdk/pull/8328/files
  - new: https://git.openjdk.java.net/jdk/pull/8328/files/d11ef860..42656f52

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=8328&range=02
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=8328&range=01-02

  Stats: 4 lines in 3 files changed: 0 ins; 0 del; 4 mod
  Patch: https://git.openjdk.java.net/jdk/pull/8328.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/8328/head:pull/8328

PR: https://git.openjdk.java.net/jdk/pull/8328