UefiCpuPkg: Correct some typos.

Correct some typos.

Cc: Eric Dong <eric.dong@intel.com>
Cc: Ray Ni <ray.ni@intel.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Cc: Rahul Kumar <rahul1.kumar@intel.com>
Signed-off-by: Guomin Jiang <guomin.jiang@intel.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>

UefiCpuPkg/Library/CpuExceptionHandlerLib/SecPeiCpuException.c

@@ -87,7 +87,7 @@ InitializeCpuExceptionHandlers (
   IdtEntryCount = (IdtDescriptor.Limit + 1) / sizeof (IA32_IDT_GATE_DESCRIPTOR);
   if (IdtEntryCount > CPU_EXCEPTION_NUM) {
     //
-    // CPU exeption library only setup CPU_EXCEPTION_NUM exception handler at most
+    // CPU exception library only setup CPU_EXCEPTION_NUM exception handler at most
     //
     IdtEntryCount = CPU_EXCEPTION_NUM;
   }