Fix typo in PCD description in SecurityPkg.

Signed-off by: jiewen yao <jiewen.yao@intel.com>
Reviewed by: guo dong <guo.dong@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@15105 6f19259b-4bc3-4df7-8a09-765794883524
1 file changed