Translate extending/building.po rst:7 and rst:9 (#557)

* Translate extending/building.po rst:7 and rst:9

* modify language and correct the format.

* rst:9 format modifying

* new commit

* Delete iterator.po

* new commit

* new modification

---------

Co-authored-by: bananaiselite <[email protected]>

Author: bananaiselite

extending/building.po

@@ -20,13 +20,15 @@ msgstr ""
 
 #: ../../extending/building.rst:7
 msgid "Building C and C++ Extensions"
-msgstr ""
+msgstr "建立 C 與 C++ 擴充套件"
 
 #: ../../extending/building.rst:9
 msgid ""
 "A C extension for CPython is a shared library (e.g. a ``.so`` file on Linux, "
 "``.pyd`` on Windows), which exports an *initialization function*."
 msgstr ""
+"一個 CPython 的 C 擴充套件是一個共用函式庫（例如在 Linux 上的 ``.so`` 檔案，"
+"在 Windows 上的 ``.pyd``），會匯出一個\\ *初始化函式*。"
 
 #: ../../extending/building.rst:12
 msgid ""