Update documentation (again and again)

Author: FoxP

README.md

@@ -4,7 +4,7 @@
 Simple Python script to log [METAR](https://en.wikipedia.org/wiki/METAR) and [TAF](https://en.wikipedia.org/wiki/Terminal_aerodrome_forecast) weather reports from [aviation.meteo.fr](https://aviation.meteo.fr) XML API (AEROWEB) to CSV files.  
 Since v2.0, can also download WINTEM, TEMSI FRANCE and TEMSI EUROC maps to PDF files. Enjoy !  
 
-AEROWEB data are free and provided by [Météo-France](http://www.meteofrance.com/accueil). You need to complete and sign in triplicate the [AEROWEB Server agreement](docs/Convention-type-AEROWEB-SERVEUR_2017) and send it by mail (**webmaster . aeroweb AT meteo . fr**) and then by post to receive your AEROWEB Server identifier.
+AEROWEB data are free and provided by [Météo-France](http://www.meteofrance.com/accueil). You need to complete and sign in triplicate the [AEROWEB Server agreement](docs/Convention-type-AEROWEB-SERVEUR_2017.odt) and send it by mail (**webmaster . aeroweb AT meteo . fr**) and then by post to receive your AEROWEB Server identifier. This is a requirement for this Python script to work.
 
 ## Usage
 Run `weather_logger.py` with a `config.ini` file path as `-c` command line argument, for example from a [cron](https://en.wikipedia.org/wiki/Cron) job.