This PR modifies the javadoc of methods in Locale, LocaleServiceProvider, and LocaleServiceProviderPool to use {@return and @linkplain.
------------- Commit messages: - fix conflicts - Locale copyright - Use @linkplain and {@return in Locale - Use {@return and spacing in LSPP - Use {@return and @linkplain in LSP Changes: https://git.openjdk.org/jdk/pull/12780/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=12780&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8303275 Stats: 107 lines in 3 files changed: 11 ins; 19 del; 77 mod Patch: https://git.openjdk.org/jdk/pull/12780.diff Fetch: git fetch https://git.openjdk.org/jdk pull/12780/head:pull/12780 PR: https://git.openjdk.org/jdk/pull/12780