fix(java): Fix typos

[gounthar]

The pull request introduces several modifications to log messages across multiple classes, including PluginModernizer, GHService, MavenInvoker, Plugin, and JdkFetcher. These changes focus on grammatical correctness and consistency in punctuation, such as the addition of periods and the use of ellipses. The adjustments enhance the clarity of log outputs without affecting the functionality or control flow of the code.

Testing done

mvn clean install

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