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/mountpoint.c b/util-linux/mountpoint.c
index 0ba4a30..b7f0481 100644
--- a/util-linux/mountpoint.c
+++ b/util-linux/mountpoint.c
@@ -12,7 +12,7 @@
 //config:	bool "mountpoint (4.5 kb)"
 //config:	default y
 //config:	help
-//config:	  mountpoint checks if the directory is a mountpoint.
+//config:	mountpoint checks if the directory is a mountpoint.
 
 //applet:IF_MOUNTPOINT(APPLET(mountpoint, BB_DIR_BIN, BB_SUID_DROP))