update main page (#770)

Signed-off-by: chensuyue <[email protected]>

Author: chensuyue

README.md

@@ -10,7 +10,7 @@ Intel® Neural Compressor
 [![coverage](https://img.shields.io/badge/coverage-85%25-green)](https://github.com/intel/neural-compressor)
 [![Downloads](https://static.pepy.tech/personalized-badge/neural-compressor?period=total&units=international_system&left_color=grey&right_color=green&left_text=downloads)](https://pepy.tech/project/neural-compressor)
 
-[Architecture](./docs/source/design.md#architecture), [Workflow](./docs/source/design.md#workflow), [Results](./docs/source/validated_model_list.md), [Examples](./examples/README.md), [IO Docs](https://intel.github.io/neural-compressor)
+[Architecture](./docs/source/design.md#architecture)   |   [Workflow](./docs/source/design.md#workflow)   |   [Results](./docs/source/validated_model_list.md)   |   [Examples](./examples/README.md)   |   [Documentations](https://intel.github.io/neural-compressor)
 </div>
 
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