kbuild/nconf: fix spaces damage

Signed-off-by: NArnaud Lacombe <lacombar@gmail.com>
Signed-off-by: NMichal Marek <mmarek@suse.cz>

scripts/kconfig/nconf.c

@@ -248,7 +248,7 @@ search_help[] = N_(
 "Only relevant lines are shown.\n"
 "\n\n"
 "Search examples:\n"
-"Examples: USB   = > find all symbols containing USB\n"
+"Examples: USB  => find all symbols containing USB\n"
 "          ^USB => find all symbols starting with USB\n"
 "          USB$ => find all symbols ending with USB\n"
 "\n");