Update {readepi} URL

Co-authored-by: Hugo Gruson <[email protected]>

DESCRIPTION

@@ -20,7 +20,7 @@ Description: Data import from several health information systems ('HIS').
     The current version of the package covers 'HIS' such as 'MS SQL', 'MySQL',
     'PostGRESQL' servers, 'REDCap', 'DHIS2' and 'Fingertips'.
 License: MIT + file LICENSE
-URL: https://github.com/epiverse-trace/readepi
+URL: https://epiverse-trace.github.io/readepi, https://github.com/epiverse-trace/readepi
 BugReports: https://github.com/epiverse-trace/readepi/issues
 Imports: 
     checkmate,