BUG: fix some minor issues in the overview

[ikerexxe]

• Change is for in
• Add missing apostrophe
• Change comma for period
• Rewrite sentence
• Change bracket for comma
• Rewrite whole paragraph to make it more understandable

Signed-off-by: Iker Pedrosa ipedrosa@redhat.com

[pcmoore]

Hi @ikerexxe, thanks for the edits! I had one small question (see above), let me know what you think.

[ikerexxe]

Updated taking into account your comment.

[pcmoore]

Thanks for the quick update, I've gone and merged this via 38824442ff3d778ac39acef94ac9aa719e132b5a.