SDL: Fixed button mapping for PS5 controllers

SDL Commits
1 
From 4f1b408a7243f9b458ec736d122850d35f44fc58 Mon Sep 17 00:00:00 2001
From: Sam Lantinga <[EMAIL REDACTED]>
Date: Mon, 12 Sep 2022 18:19:02 -0700
Subject: [PATCH] Fixed button mapping for PS5 controllers

---
 src/joystick/SDL_gamecontroller.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/joystick/SDL_gamecontroller.c b/src/joystick/SDL_gamecontroller.c
index da3e64b9980..1565eaa10a6 100644
--- a/src/joystick/SDL_gamecontroller.c
+++ b/src/joystick/SDL_gamecontroller.c
@@ -634,7 +634,7 @@ static ControllerMapping_t *SDL_CreateMappingForHIDAPIController(SDL_JoystickGUI
                 break;
             case SDL_CONTROLLER_TYPE_PS5:
                 /* PS5 controllers have a microphone button and an additional touchpad button */
-                SDL_strlcat(mapping_string, "touchpad:b15,misc1:b16", sizeof(mapping_string));
+                SDL_strlcat(mapping_string, "touchpad:b15,misc1:b16,", sizeof(mapping_string));
                 break;
             case SDL_CONTROLLER_TYPE_NINTENDO_SWITCH_PRO:
                 /* Nintendo Switch Pro controllers have a screenshot button */