RFR: 8331331: :tier1 target explanation in doc/testing.md is incorrect [v2]

[SendaoYan]

> Hi,
> 
> In doc/testing.md file, it says:
> 
> As an example, :tier1 will expand to jtreg:$(TOPDIR)/test/hotspot/jtreg:tier1 jtreg:$(TOPDIR)/test/jdk:tier1 jtreg:$(TOPDIR)/test/langtools:tier1 jtreg:$(TOPDIR)/test/nashorn:tier1 jtreg:$(TOPDIR)/test/jaxp:tier1.
> 
> The actual situation is :tier1 doesn't contains test/nashorn:tier1, and the document missed test/lib-test:tier1
> 
> $ make -n test-tier1 &> test-tier1.log
> $ grep "Running test " test-tier1.log
> Running test 'jtreg:test/hotspot/jtreg:tier1'
> Running test 'jtreg:test/jdk:tier1'
> Running test 'jtreg:test/langtools:tier1'
> Running test 'jtreg:test/jaxp:tier1'
> Running test 'jtreg:test/lib-test:tier1'
> 
> Only change the document, no risk.

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

  deliberately making it shorter and ading ... show that this is not am exhaustive list

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/19002/files
  - new: https://git.openjdk.org/jdk/pull/19002/files/154b0de1..b0277b9e

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=19002&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=19002&range=00-01

  Stats: 8 lines in 2 files changed: 1 ins; 0 del; 7 mod
  Patch: https://git.openjdk.org/jdk/pull/19002.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/19002/head:pull/19002

PR: https://git.openjdk.org/jdk/pull/19002