[auth] Minor comment rewording

src/server/qgsserver.cpp

@@ -240,7 +240,7 @@ bool QgsServer::init()
 
   QgsApplication::createDatabase(); //init qgis.db (e.g. necessary for user crs)
 
-  // Instantiate authentication system
+  // Initialize the authentication system
   //   creates or uses qgis-auth.db in ~/.qgis3/ or directory defined by QGIS_AUTH_DB_DIR_PATH env variable
   //   set the master password as first line of file defined by QGIS_AUTH_PASSWORD_FILE env variable
   //   (QGIS_AUTH_PASSWORD_FILE variable removed from environment after accessing)