Installation.md

@@ -15,7 +15,7 @@
     make exorem
     ```
 5. Download the R50 k-tables (_R50.tar.xz_) available [here](https://lesia.obspm.fr/exorem/).
-6. Extract its content in the _data/k_coefficients_tables/_ directory and execute:
+6. Extract its content in the _data/k_coefficients_tables/_ directory by executing:
     ```bash
     tar xJvf R50.tar.xz
     ```