Still more typo fixes

Signed-off-by: Adrian Bunk <bunk@stusta.de>
diff --git a/security/selinux/Kconfig b/security/selinux/Kconfig
index d62b098..23b5104 100644
--- a/security/selinux/Kconfig
+++ b/security/selinux/Kconfig
@@ -122,7 +122,7 @@
 	  well as any conntrack helpers for protocols which you
 	  wish to control.
 
-	  If you are unsure what do do here, select N.
+	  If you are unsure what to do here, select N.
 
 config SECURITY_SELINUX_POLICYDB_VERSION_MAX
 	bool "NSA SELinux maximum supported policy format version"