Fix translation strings.

	PR translation/90148

gcc/ChangeLog:

	* config/rs6000/rs6000.cc (rs6000_linux64_override_options): Put
	quote to a proper place.
	* plugin.cc (default_plugin_dir_name): Likewise.

gcc/fortran/ChangeLog:

	* intrinsic.cc (gfc_is_intrinsic): Put
	quote to a proper place.