Change Always Run key default to Caps Lock, as in vanilla

A poor choice, but it's still what players coming from vanilla MW will expect.

apps/openmw/mwinput/inputmanagerimp.cpp

@@ -894,7 +894,7 @@ namespace MWInput
         defaultKeyBindings[A_QuickKey10] = SDL_GetKeyFromScancode(SDL_SCANCODE_0);
         defaultKeyBindings[A_Screenshot] = SDL_GetKeyFromScancode(SDL_SCANCODE_F12);
         defaultKeyBindings[A_ToggleHUD] = SDL_GetKeyFromScancode(SDL_SCANCODE_F11);
-        defaultKeyBindings[A_AlwaysRun] = SDL_GetKeyFromScancode(SDL_SCANCODE_Y);
+        defaultKeyBindings[A_AlwaysRun] = SDL_GetKeyFromScancode(SDL_SCANCODE_CAPSLOCK);
         defaultKeyBindings[A_QuickSave] = SDL_GetKeyFromScancode(SDL_SCANCODE_F5);
         defaultKeyBindings[A_QuickLoad] = SDL_GetKeyFromScancode(SDL_SCANCODE_F9);