RFR: Fix links to #trivial-changes [v3]

[Manuel Hässig]

> This simple PR fixes broken links to the "Trivial Changes" section.

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

  Update src/guide/testing-the-jdk.md
  
  Co-authored-by: Alexey Ivanov <alexey.ivanov at oracle.com>

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

Changes:
  - all: https://git.openjdk.org/guide/pull/156/files
  - new: https://git.openjdk.org/guide/pull/156/files/84cd17a9..e7910511

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=guide&pr=156&range=02
 - incr: https://webrevs.openjdk.org/?repo=guide&pr=156&range=01-02

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/guide/pull/156.diff
  Fetch: git fetch https://git.openjdk.org/guide.git pull/156/head:pull/156

PR: https://git.openjdk.org/guide/pull/156