Storage: Rename all the variables about get file to storage from minio. (#2497)

https://github.com/infiniflow/ragflow/issues/2496

### What problem does this PR solve?

_Briefly describe what this PR aims to solve. Include background context
that will help reviewers understand the purpose of the PR._

### Type of change

- [ ] Bug Fix (non-breaking change which fixes an issue)
- [ ] New Feature (non-breaking change which adds functionality)
- [ ] Documentation Update
- [x] Refactoring
- [ ] Performance Improvement
- [ ] Other (please describe):

rag/svr/task_executor.py

@@ -137,7 +137,7 @@ def collect():
     return tasks
 
 
-def get_minio_binary(bucket, name):
+def get_storage_binary(bucket, name):
     return STORAGE_IMPL.get(bucket, name)
 
 
@@ -155,8 +155,8 @@ def build(row):
     chunker = FACTORY[row["parser_id"].lower()]
     try:
         st = timer()
-        bucket, name = File2DocumentService.get_minio_address(doc_id=row["doc_id"])
-        binary = get_minio_binary(bucket, name)
+        bucket, name = File2DocumentService.get_storage_address(doc_id=row["doc_id"])
+        binary = get_storage_binary(bucket, name)
         cron_logger.info(
             "From minio({}) {}/{}".format(timer() - st, row["location"], row["name"]))
     except TimeoutError as e: