Fix error in config doc (#145)

`--minimal` is option for `generate` and should be positioned after it

docs/CONFIG.md

@@ -191,7 +191,7 @@ A small utility (`tools/configure.py`) is included to simplify the configuration
     For a minimal version, run:
 
     ```shell
-    python tools/configure.py --minimal generate FasterRCNN BBoxHead
+    python tools/configure.py generate --minimal FasterRCNN BBoxHead
     ```
 
 

docs/CONFIG_cn.md

@@ -181,7 +181,7 @@ pip install typeguard http://github.com/willthefrog/docstring_parser/tarball/mas
     如需最小配置，运行：
 
     ```shell
-    python tools/configure.py --minimal generate FasterRCNN BBoxHead
+    python tools/configure.py generate --minimal FasterRCNN BBoxHead
     ```