capitalize one last rcfile message I missed before

git-svn-id: svn://svn.savannah.gnu.org/nano/trunk/nano@1548 35c25a1d-7b9e-4130-9fde-d3aeb78583b8

src/rcfile.c

@@ -514,7 +514,7 @@ void parse_rcfile(FILE *rcstream)
 	    parse_colors(ptr);
 #endif				/* ENABLE_COLOR */
 	else {
-	    rcfile_msg(_("command %s not understood"), keyword);
+	    rcfile_msg(_("Command %s not understood"), keyword);
 	    continue;
 	}