config: deindent all help texts

Those two spaces after tab have no effect, and always a nuisance when editing.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
diff --git a/util-linux/fallocate.c b/util-linux/fallocate.c
index 34f01eb..70e7e17 100644
--- a/util-linux/fallocate.c
+++ b/util-linux/fallocate.c
@@ -9,7 +9,7 @@
 //config:	bool "fallocate (5 kb)"
 //config:	default y
 //config:	help
-//config:	  Preallocate space for files.
+//config:	Preallocate space for files.
 
 //applet:IF_FALLOCATE(APPLET(fallocate, BB_DIR_USR_BIN, BB_SUID_DROP))