RFR: 8280047: Broken link to Swing Connection document from javax.swing package docs

[Prasanta Sadhukhan]

Fixed the broken link with appropriate link to swing document.

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Commit messages:
 - 8280047: Broken link to Swing Connection document from javax.swing package docs

Changes: https://git.openjdk.java.net/jdk/pull/7104/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=7104&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8280047
  Stats: 2 lines in 1 file changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.java.net/jdk/pull/7104.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/7104/head:pull/7104

PR: https://git.openjdk.java.net/jdk/pull/7104