changed ch to zh

docs/getting-started.md

@@ -6,7 +6,7 @@
 pip install foreignthon
 pip install foreignthon-es   # add Spanish
 pip install foreignthon-ta   # add Tamil
-pip install foreignthon-ch   # add Chinese
+pip install foreignthon-zh   # add Chinese
 ```
 
 For CLI use across projects, prefer pipx:
@@ -77,6 +77,6 @@ python -m venv .venv && source .venv/bin/activate
 pip install -e "packages/foreignthon[dev]"
 pip install -e packages/langs/es
 pip install -e packages/langs/ta
-pip install -e packages/langs/ch
+pip install -e packages/langs/zh
 pytest packages/foreignthon/tests/ -v
 ```