Change: Use gender-neutral pronouns in console command messages (and comments) (#9203)

src/saveload/ai_sl.cpp

@@ -98,7 +98,7 @@ static void Load_AIPL()
 					DEBUG(script, 0, "The savegame has an AI by the name '%s', version %d which is no longer available.", _ai_saveload_name, _ai_saveload_version);
 					DEBUG(script, 0, "The latest version of that AI has been loaded instead, but it'll not get the savegame data as it's incompatible.");
 				}
-				/* Make sure the AI doesn't get the saveload data, as he was not the
+				/* Make sure the AI doesn't get the saveload data, as it was not the
 				 *  writer of the saveload data in the first place */
 				_ai_saveload_version = -1;
 			}