[readme][xs]: updated readme to remove {} braces

README.md

@@ -13,7 +13,7 @@ To build the dataset we use the csv version of the current edition.
 
 Tools needed: [MDBTools](http://mdbtools.sourceforge.net/) and [CSVKit](https://github.com/onyxfish/csvkit).
 Download the current edition from [UNECE](https://www.unece.org/cefact/codesfortrade/codes_index.html) and put it into the root directory.
-Then execute ```bash scripts/prepare_edition_mdb.sh loc{ed}mdb.zip```, where {ed} identify the release.
+Then execute ```bash scripts/prepare_edition_mdb.sh loc*ed*mdb.zip```, where *ed* identify the release.
 
 To integrate the data from the csv then run the python file