RFR: 8361463: Render method of javax.swing.text.AbstractDocument uses 'currency' instead of 'concurrency'

[ANUPAM DEV]

Hello,
This is a trivial change in the documentation of render method of AbstractDocument class.
Changed currency to concurrency

Kindly review.

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Commit messages:
 - Changed `currency` to `concurrency` in AbstractDocument.java `render` method

Changes: https://git.openjdk.org/jdk/pull/26154/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=26154&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8361463
  Stats: 2 lines in 1 file changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/26154.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/26154/head:pull/26154

PR: https://git.openjdk.org/jdk/pull/26154