Show cmclient issue tracker link instead of vanilla in crash reports (fixes #26)

src/os/macosx/crashlog_osx.cpp

@@ -126,7 +126,7 @@ public:
 		std::string message = fmt::format(
 				 "Please send crash.json.log, crash.dmp, and crash.sav to the developers. "
 				 "This will greatly help debugging.\n\n"
-				 "https://github.com/OpenTTD/OpenTTD/issues.\n\n"
+				 "https://github.com/citymania-org/cmclient/issues\n\n"
 				 "{}\n{}\n{}\n{}",
 				 this->crashlog_filename, this->crashdump_filename, this->savegame_filename, this->screenshot_filename);
 

src/os/windows/crashlog_win.cpp

@@ -436,7 +436,7 @@ static const wchar_t _crash_desc[] =
 	L"A serious fault condition occurred in the game. The game will shut down.\n"
 	L"Please send crash.json.log, crash.dmp, and crash.sav to the developers.\n"
 	L"This will greatly help debugging.\n\n"
-	L"https://github.com/OpenTTD/OpenTTD/issues\n\n"
+	L"https://github.com/citymania-org/cmclient/issues\n\n"
 	L"%s\n%s\n%s\n%s\n";
 
 static const wchar_t * const _expand_texts[] = {L"S&how report >>", L"&Hide report <<" };