[code-reflection] RFR: Fix some typos and doc improvement

[duke]

On Thu, 18 Dec 2025 21:19:51 GMT, Nadeesh TV <ntv at openjdk.org> wrote:

> Fix typos and made some minor improvement in the build doc.

@deleSerna 
Your change (at version 3f535c8647d0907c3cc7b7df8cbb63b43ed3a727) is now ready to be sponsored by a Committer.

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PR Comment: https://git.openjdk.org/babylon/pull/766#issuecomment-3674141456