Fix that weird formatting issue

Author: sterrettm2

src/avx512-64bit-common.h

@@ -968,8 +968,7 @@ struct zmm_vector<uint64_t> {
 static_assert(sizeof(size_t) == sizeof(uint64_t),
               "Size of size_t and uint64_t are not the same");
 template <>
-struct zmm_vector<size_t> : public zmm_vector<uint64_t> {
-};
+struct zmm_vector<size_t> : public zmm_vector<uint64_t> {};
 #endif
 
 template <>