RFR: 8313348: Fix typo in JFormattedTextField: 'it self' [v2]

[Alexey Ivanov]

> A trivial change: ‘it self’ → ‘itself’.
> 
> In addition to it, I added a comma after ‘Similarly’ where it starts a sentence.

Alexey Ivanov has updated the pull request incrementally with two additional commits since the last revision:

 - Update the copyright and organise imports in BasicTreeUI
 - BasicTreeUI: it self -> itself

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/15087/files
  - new: https://git.openjdk.org/jdk/pull/15087/files/c5fa16a1..fedb0da0

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=15087&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=15087&range=00-01

  Stats: 76 lines in 1 file changed: 61 ins; 2 del; 13 mod
  Patch: https://git.openjdk.org/jdk/pull/15087.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/15087/head:pull/15087

PR: https://git.openjdk.org/jdk/pull/15087