RFR: 8272915: (doc) package-info typo in extLink [v2]

[Bradford Wetmore]

> Added missing @.  Link now works.

Bradford Wetmore has updated the pull request incrementally with one additional commit since the last revision:

  Forgot copyright update

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Changes:
  - all: https://git.openjdk.java.net/jdk/pull/5284/files
  - new: https://git.openjdk.java.net/jdk/pull/5284/files/7700c788..0467f2ec

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=5284&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=5284&range=00-01

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.java.net/jdk/pull/5284.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/5284/head:pull/5284

PR: https://git.openjdk.java.net/jdk/pull/5284