Fix some typos (found by codespell) (#1316)

Signed-off-by: Stefan Weil <sw@weilnetz.de>

back/src/Model/PositionNotifier.ts

@@ -21,7 +21,7 @@ interface ZoneDescriptor {
 }
 
 export class PositionNotifier {
-    // TODO: we need a way to clean the zones if noone is in the zone and noone listening (to free memory!)
+    // TODO: we need a way to clean the zones if no one is in the zone and no one listening (to free memory!)
 
     private zones: Zone[][] = [];
 

back/src/RoomManager.ts

@@ -57,7 +57,7 @@ const roomManager: IRoomManagerServer = {
                                         room = gameRoom;
                                         user = myUser;
                                     } else {
-                                        //Connexion may have been closed before the init was finished, so we have to manually disconnect the user.
+                                        //Connection may have been closed before the init was finished, so we have to manually disconnect the user.
                                         socketManager.leaveRoom(gameRoom, myUser);
                                     }
                                 })