RFR: 8266516: One label typo in the properties for bi-directional text

[Manukumar V S]

A typo in one of the labels of Bidi text has been corrected. This is located in Samples > Controls > Text > Bidi

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Commit messages:
 - 8266516: One label typo in the properties for bi-directional text

Changes: https://git.openjdk.java.net/jfx/pull/500/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jfx&pr=500&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8266516
  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.java.net/jfx/pull/500.diff
  Fetch: git fetch https://git.openjdk.java.net/jfx pull/500/head:pull/500

PR: https://git.openjdk.java.net/jfx/pull/500