RFR: 8325055: Rename Injector.h [v2]

[Kim Barrett]

> Please review this trivial change that renames the file
> test/hotspot/jtreg/vmTestbase/nsk/share/jvmti/Injector.h to Injector.hpp.
> 
> Testing: mach5 tier1

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

  fix name in README

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/17656/files
  - new: https://git.openjdk.org/jdk/pull/17656/files/ea9edad1..0ab5cf73

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=17656&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=17656&range=00-01

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/17656.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/17656/head:pull/17656

PR: https://git.openjdk.org/jdk/pull/17656