[ruby/csv] add document of strip (#88)
add document of strip
modify typo
https://github.com/ruby/csv/commit/de0257dc31
[ruby/csv] add document of strip (#88)
add document of strip
modify typo
https://github.com/ruby/csv/commit/de0257dc31