Fix some format.
Fix some format.

faq/faq.rst#L240: break long command into several lines for clear
faq/faq.rst#L283: remove extra underline at the end of hyperlinks form

kojiromike/Idris-dev,kojiromike/Idris-dev,kojiromike/Idris-dev,kojiromike/Idris-dev,kojiromike/Idris-dev,kojiromike/Idris-dev