RFR: JDK-8317285: Misspellings in hprof test lib

[Chris Plummer]

On Fri, 13 Oct 2023 01:15:58 GMT, Alex Menkov <amenkov at openjdk.org> wrote:

> The change fixes misspelled "referer" in test/lib/jdk/test/lib/hprof library
> The only caller of changed public API is VThreadInHeapDump.java

Marked as reviewed by cjplummer (Reviewer).

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PR Review: https://git.openjdk.org/jdk/pull/16174#pullrequestreview-1676996939