Update multi_language.py

multi_language.py

@@ -12,6 +12,15 @@
 
         4. Find the translated program in `multi-language\English\*`
    
+    P.S.
+    
+        - The translation mapping will be stored in `docs/translation_xxxx.json`
+        
+        - If you would like to share your `docs/translation_xxxx.json`, (so that everyone can use the cached & revised translation mapping), please open a Pull Request
+
+        - If there is any translation error in `docs/translation_xxxx.json`, please open a Pull Request
+        
+        - Welcome any Pull Request, regardless of language
 """
 
 import os