the implementation uses ZipImportError, not ZipImporterError...

Doc/lib/libzipimport.tex

@@ -36,7 +36,7 @@ has been altered during runtime.
 
 The available attributes of this module are:
 
-\begin{excdesc}{ZipImporterError}
+\begin{excdesc}{ZipImportError}
   Exception raised by zipimporter objects. It's a subclass of
   \exception{ImportError}, so it can be caught as \exception{ImportError},
   too.