* refcard.tex (section{Info}): Add `i'. Use `s' instead of `M-s'.
* de-refcard.tex (section{Info}): Ditto.
* fr-refcard.tex (section{Info}): Ditto. Translation suggested by
Stefan Monnier <monnier@iro.umontreal.ca>.
* pl-refcard.tex (section{Info}): Ditto. Translation suggested by
Slawomir Nowaczyk <slawomir.nowaczyk.847@student.lu.se>.
* cs-refcard.tex (section{Info}): Use `s' instead of `M-s'. Entry
for `i' is not translated yet.
* pt-br-refcard.tex (section{Info}): Ditto.
* ru-refcard.tex (section{Info}): Ditto.
* sk-refcard.tex (section{Info}): Ditto.