Tanguy Ortolo authored Oct 27, 2014 and Sébastien Wilmet committed Oct 27, 2014

The typo is in the src/build_tool_dialog.vala, but also appears in the
English part of the translation files, so this patch modifies them
without making them fuzzy (this is a funny case: the original text is
wrong, but the translations are supposed to be correct!).