RFR: 7903201: README.md referes to old API and old generated code pattern

Fri May 27 08:09:50 UTC 2022

On Fri, 27 May 2022 07:17:35 GMT, Athijegannathan Sundararajan <sundar at openjdk.org> wrote:

> * fixed README.md for new API usage and new generated code pattern
> * --version uses module version rather than java.version
> * fixed makefile --module-version to be 19

Looks good

README.md line 97:

> 95: 
> 96: ```java
> 97: static final FunctionDescriptor distance$FUNC = FunctionDescriptor.of(Constants$root.C_DOUBLE$LAYOUT,

Nothing changed here right? Just indent?

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Marked as reviewed by mcimadamore (Committer).

PR: https://git.openjdk.java.net/jextract/pull/42