RFR: Update Readme with macOs specifics [v3]

[Brice Dutheil]

On Tue, 29 Mar 2022 12:59:44 GMT, Jorn Vernee <jvernee at openjdk.org> wrote:

>> Brice Dutheil has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Make local installation quoted
>
> README.md line 18:
> 
>> 16: > <details><summary><strong>Using a local installation of LLVM</strong></summary>
>> 17: > 
>> 18: > While the recommanded way is to use a [release from the LLVM project](https://releases.llvm.org/download.html),
> 
> Small typo here
> Suggestion:
> 
>> While the recommended way is to use a [release from the LLVM project](https://releases.llvm.org/download.html),

Ah thank you ��

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PR: https://git.openjdk.java.net/jextract/pull/10