fixed some errors

Signed-off-by: ZhaodongYan1 <yzdrogeryan@gmail.com>

Author: ZhaodongYan1

README.md

@@ -147,7 +147,7 @@ We provide a set of quick tutorials to get you started with the library:
 * [Tutorial 7: Use FlagAI prompt-learning tool-kit to improve performance on SuperGLUE](/docs/TUTORIAL_7_PROMPT_LERANING.md)
 * [Tutorial 8: Setup environment for training models with multi-machine](/docs/TUTORIAL_8_ENVIRONMENT_SETUP.md)
 * [Tutorial 9: Text generation with encoder/decoder/encoder-decoder models](/docs/TUTORIAL_9_SEQ2SEQ_METHOD.md)
-* [Tutorial 11: How to transform a customized model into a megatron-LM-style parallel model](/docs/TUTORIAL_10_MEGATRON.md)
+* [Tutorial 10: How to transform a customized model into a megatron-LM-style parallel model](/docs/TUTORIAL_10_MEGATRON.md)
 ## Contributing
 
 Thanks for your interest in contributing! There are many ways to get involved;