SecurityPkg: Fix spelling errors

https://bugzilla.tianocore.org/show_bug.cgi?id=2265

Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Chao Zhang <chao.b.zhang@intel.com>
Signed-off-by: Michael D Kinney <michael.d.kinney@intel.com>
Reviewed-by: Jiewen Yao <Jiewen.yao@intel.com>
Reviewed-by: Jian J Wang <jian.j.wang@intel.com>

SecurityPkg/Library/HashLibTpm2/HashLibTpm2.c

@@ -29,7 +29,7 @@ TPM2_HASH_MASK mTpm2HashMask[] = {
 };
 
 /**
-  The function get algorith from hash mask info.
+  The function get algorithm from hash mask info.
 
   @return Hash algorithm
 **/