Fixed formatting in the staticFor documentation

 *

 * \e staticFor is a generic C++14/C++17 implementation of a static for-loop

 * using \e constexpr functions and template metaprogramming. It is equivalent

 * to executing a function $f(i)$ for arguments $i$ from the integral range

 * to executing a function `f(i)` for arguments `i` from the integral range

 * `[begin, end)`, but with the type \ref std::integral_constant rather than

 * `int` or `std::size_t` representing the indices. Hence, each index has its

 * own distinct C++ type and the \e value of the index can be deduced from the

 * type.

 *

 * Also note that thanks to `constexpr`, the argument $i$ can be used in

 * Also note that thanks to `constexpr`, the argument `i` can be used in

 * constant expressions and the \e staticFor function can be used from the host

 * code as well as CUDA kernels (TNL requires the `--expt-relaxed-constexpr`

 * parameter when compiled by `nvcc`).