Added two developer guide and removed from README ' builder docker image' and 'launch service from source' (#2590)

### What problem does this PR solve?


### Type of change

- [x] Documentation Update

docs/references/_category_.json

@@ -1,8 +1,8 @@
 {
   "label": "References",
-  "position": 3,
+  "position": 4,
   "link": {
     "type": "generated-index",
-    "description": "RAGFlow References"
+    "description": "Miscellaneous References"
   }
 }