[NFC] [CFI] correct comment in test (llvm#152399)

It incorrectly stated that `const char*` gets normalized to ptr, while
it should say that `char*` does.

Author: fmayer

clang/test/CodeGen/cfi-icall-generalize.c

@@ -1,7 +1,7 @@
 // RUN: %clang_cc1 -triple x86_64-unknown-linux -fsanitize=cfi-icall -fsanitize-trap=cfi-icall -emit-llvm -o - %s | FileCheck --check-prefix=CHECK --check-prefix=UNGENERALIZED %s
 // RUN: %clang_cc1 -triple x86_64-unknown-linux -fsanitize=cfi-icall -fsanitize-trap=cfi-icall -fsanitize-cfi-icall-generalize-pointers -emit-llvm -o - %s | FileCheck --check-prefix=CHECK --check-prefix=GENERALIZED %s
 
-// Test that const char* is generalized to const ptr and that const char** is
+// Test that const char* is generalized to const ptr and that char** is
 // generalized to ptr
 
 // CHECK: define{{.*}} ptr @f({{.*}} !type [[TYPE:![0-9]+]] !type [[TYPE_GENERALIZED:![0-9]+]]