update document sdk (#2485)

### Type of change
#2485
- [x] Performance Improvement

api/apps/sdk/doc.py

                     "content_with_weight": "content",
                     "doc_id": "document_id",
                     "important_kwd": "important_keywords",
+                    "img_id":"image_id",
                 }
                 renamed_chunk = {}
                 for key, value in chunk.items():
             "content_with_weight": "content",
             "doc_id": "document_id",
             "important_kwd": "important_keywords",
-            "kb_id":"knowledge_base_id",
+            "kb_id":"dataset_id",
+            "create_timestamp_flt":"create_timestamp",
+            "create_time": "create_time",
+            "document_keyword":"document",
         }
         renamed_chunk = {}
         for key, value in d.items():
-            new_key = key_mapping.get(key, key)
-            renamed_chunk[new_key] = value
+            if key in key_mapping:
+                new_key = key_mapping.get(key, key)
+                renamed_chunk[new_key] = value
 
         return get_json_result(data={"chunk": renamed_chunk})
         # return get_json_result(data={"chunk_id": chunk_id})

sdk/python/ragflow/modules/chunk.py

         self.content = ""
         self.important_keywords = []
         self.create_time = ""
-        self.create_timestamp_float = 0.0
+        self.create_timestamp = 0.0
         self.knowledgebase_id = None
         self.document_name = ""
         self.document_id = ""
                          "name": self.document_name,
                          "content": self.content,
                          "important_keywords": self.important_keywords,
-                         "create_time": self.create_time,
-                         "create_timestamp_flt": self.create_timestamp_float,
                          "document_id": self.document_id,
                          "status": self.status,
                          })

sdk/python/ragflow/modules/document.py

         res = self.post('/doc/save',
                         {"id": self.id, "name": self.name, "thumbnail": self.thumbnail, "knowledgebase_id": self.knowledgebase_id,
                          "parser_method": self.parser_method, "parser_config": self.parser_config.to_json(),
-                         "source_type": self.source_type, "type": self.type, "created_by": self.created_by,
-                         "size": self.size, "token_count": self.token_count, "chunk_count": self.chunk_count,
-                         "progress": self.progress, "progress_msg": self.progress_msg,
-                         "process_begin_at": self.process_begin_at, "process_duation": self.process_duration
                          })
         res = res.json()
         if res.get("retmsg") == "success":