fix: The image uploaded from the workflow knowledge base zip file cannot be parsed (#4507)

Author: shaohuzhang1

apps/common/handle/impl/text/text_split_handle.py

@@ -32,7 +32,7 @@ def support(self, file, get_buffer):
         if file_name.endswith(".md") or file_name.endswith('.txt') or file_name.endswith('.TXT') or file_name.endswith(
                 '.MD'):
             return True
-        if file_name.index('.') > 0:
+        if '.' in file_name:
             return False
         buffer = get_buffer(file)
         result = detect(buffer)