RFR: 8157729: examples in LinkedHashMap and LinkedHashSet class doc use raw types [v2]

[Stuart Marks]

> Add some generics and wrap in `{@code}` to protect angle brackets.

Stuart Marks has updated the pull request incrementally with one additional commit since the last revision:

  Update copyright years.

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Changes:
  - all: https://git.openjdk.java.net/jdk/pull/87/files
  - new: https://git.openjdk.java.net/jdk/pull/87/files/b40485ba..527d8a16

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=87&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=87&range=00-01

  Stats: 2 lines in 2 files changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.java.net/jdk/pull/87.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/87/head:pull/87

PR: https://git.openjdk.java.net/jdk/pull/87