Issue #422: minor correction on language files

po/de.po

@@ -566,7 +566,7 @@ msgid ""
 msgstr ""
 
 #: plugins/check_disk.c:957
-msgid "Choose bytes, kB, MB, GB, TB, KiB, MiB, GiB, TiB (default: MB)"
+msgid "Choose bytes, kB, MB, GB, TB, KiB, MiB, GiB, TiB (default: MiB)"
 msgstr ""
 
 #: plugins/check_disk.c:960

po/fr.po

@@ -577,7 +577,7 @@ msgstr ""
 "être utilisé plusieurs fois)"
 
 #: plugins/check_disk.c:957
-msgid "Choose bytes, kB, MB, GB, TB, KiB, MiB, GiB, TiB (default: MB)"
+msgid "Choose bytes, kB, MB, GB, TB, KiB, MiB, GiB, TiB (default: MiB)"
 msgstr "Choisissez octets, kb, MB, GB, TB, KiB, MiB, GiB, TiB (par défaut: MB)"
 
 #: plugins/check_disk.c:960