Added pre-install doc for G2P and TN modules and updated the dependency...

Added pre-install doc for G2P and TN modules and updated the dependency version of pypinyin second, test=doc

setup.py

@@ -52,7 +52,7 @@ base = [
     "Pillow>=9.0.0",
     "praatio==5.0.0",
     "protobuf>=3.1.0, <=3.20.0",
-    "pypinyin",
+    "pypinyin<=0.44.0",
     "pypinyin-dict",
     "python-dateutil",
     "pyworld==0.2.12",