RFR: 8236648: javadoc warning on Text::tabSizeProperty method

[Scott Palmer]

Implemented suggested fix to address javadoc warning.

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Commits:
 - bd81a902: 8236648: javadoc warning on Text::tabSizeProperty method

Changes: https://git.openjdk.java.net/jfx/pull/78/files
 Webrev: https://webrevs.openjdk.java.net/jfx/78/webrev.00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8236648
  Stats: 2 lines in 1 file changed: 2 ins; 0 del; 0 mod
  Patch: https://git.openjdk.java.net/jfx/pull/78.diff
  Fetch: git fetch https://git.openjdk.java.net/jfx pull/78/head:pull/78

PR: https://git.openjdk.java.net/jfx/pull/78