RFR: 7420: Update Japanese translation for rules [v2]

[mohno007]

> This PR updates/improves Japanese translation of rules and its descriptions.
> 
> ## Update
> 
> * Update texts based on new commits to `messages.properties` made after the last update date of the `messages_ja.properties`.
> 	* Support a new placeholder format introduced in `Rule 2.0`.
> 	* Use Markdown style link.
> 	* Add translations for newly added texts.
> * Update texts for translation correctness and understandability.
> 	* Fix some wordings for understandability. Especially usage of Japanese particle.
> 	* Add [Japanese counter word (助数詞)](https://en.wikipedia.org/wiki/Japanese_counter_word) for numeric value.
> 
> You can see decoded version of `messages_ja` using this script:
> 
> 
> native2ascii -reverse core/org.openjdk.jmc.flightrecorder.rules.jdk/src/main/resources/org/openjdk/jmc/flightrecorder/rules/jdk/messages/internal/messages_ja.properties

mohno007 has updated the pull request incrementally with one additional commit since the last revision:

  Update copyright year

-------------

Changes:
  - all: https://git.openjdk.java.net/jmc/pull/308/files
  - new: https://git.openjdk.java.net/jmc/pull/308/files/48d36d49..ac631bd3

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jmc&pr=308&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jmc&pr=308&range=00-01

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.java.net/jmc/pull/308.diff
  Fetch: git fetch https://git.openjdk.java.net/jmc pull/308/head:pull/308

PR: https://git.openjdk.java.net/jmc/pull/308