Getting-started.md

@@ -130,7 +130,7 @@ This time, our goal will be to have more precise results. We will use our calcul
 ## Setup
 1. Download the R500 compressed *k*-tables [here](https://gitlab.obspm.fr/dblain/exorem/-/tree/master/data/k_coefficients_tables).
 2. Decompress them inside the _data/k_coefficients_tables_ directory executing e.g. `tar xJvf R500.tar.xz R500`.
-3. It is always better to use a stellar spectrum rather than a blackbody spectrum. Here we will download a [BT-Settl](http://svo2.cab.inta-csic.es/theory/newov2/index.php) spectrum model. Take T_eff = 6200 K, Log(g) = 4.5, and a metallicity of 0. Put the file into the _data/stellar_spectra_ directory and rename it e.g. "spectrum_BTSettl_6200K_logg4.5_met0.dat" (mind the .dat extension). Replace the header of the file by the following :
+3. It is always better to use a stellar spectrum rather than a blackbody spectrum. Here we will download a [BT-Settl](http://svo2.cab.inta-csic.es/theory/newov2/index.php) spectrum model. Take T_eff = 6200 K, Log(g) = 4.5, and a metallicity of 0. Put the ASCII file into the _data/stellar_spectra_ directory and rename it e.g. "spectrum_BTSettl_6200K_logg4.5_met0.dat" (mind the .dat extension). Replace the header of the file by the following :
     ```text
     # wavelength spectral_radiosity ! effective_temperature = 6200 K
     # angstrom erg.s-1.cm-2.a-1