Fix typos

[Robson]

Also: Possibly the word "do" in the first paragraph should be "does", but I don't know enough about these technologies to be sure.

[Robson]

May also want to check the link near the end with the text: "LucaCanali/sparkMeasure" because it goes to a site that doesn't exist. Presumably supposed to point to https://github.com/LucaCanali/sparkMeasure

[dutrevis]

Thanks for the fixes, @Robson! Also, both your points are correct. I'm committing fixes for them, together with other link updates that I've found, due to changes on Maven Central's search.

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[Robson]

Thanks for the fixes, @Robson! Also, both your points are correct. I'm committing fixes for them, together with other link updates that I've found, due to changes on Maven Central's search.

You're very welcome - glad I could help!