docs(readme): write the fallback chains in the order the loader walks

Crypto read okx · ccxt · binance and forex mt5 · yfinance · akshare in
all seven READMEs, while FALLBACK_CHAINS walks binance before ccxt and
akshare before yfinance. The note "futures / fund / macro → tushare /
akshare" was stale too: futures is akshare → local (#1395), funds
tushare → akshare, macro akshare → tushare. Canada, Vietnam, Argentina
and indices had no bullet.

test_fallback_chains_are_written_in_the_order_the_loader_walks compares
every chain a README writes with _DEFAULT_CHAINS, both ways, as
sequences, so translated labels need no mapping.

README_ko.md

@@ -469,8 +469,10 @@ vibe-trading connector install /tmp/my-broker
 - **인도 (NSE/BSE)** → `yahoo` · `yfinance` · `india_broker` · `local`
 - **한국 (KOSPI/KOSDAQ)** → `pykrx` · `yahoo` · `yfinance` · `local`
 - **영국 (LSE)** → `yahoo` · `yfinance` · `local` *(명시된 GBP/GBp 호가만 허용)*
-- **크립토** → `okx` · `ccxt` · `binance` · `yfinance` · `local`
-- **외환/귀금속** → `mt5` · `yfinance` · `akshare` · `local`  ·  *(선물 / 펀드 / 매크로 → `tushare`/`akshare` → `local`)*
+- **크립토** → `okx` · `binance` · `ccxt` · `yfinance` · `local`
+- **외환/귀금속** → `mt5` · `akshare` · `yfinance` · `local`
+- **캐나다 / 베트남 / 아르헨티나 / 지수** → `yahoo` · `yfinance` · `local`
+- **중국 선물** → `akshare` · `local`  ·  **펀드** → `tushare` · `akshare` · `local`  ·  **매크로** → `akshare` · `tushare` · `local`
 
 ### Longbridge를 명시적으로 사용하기