Update README.md

README.md

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 Finetuned controlnet inpainting model based on sd3-medium.
 
-![SD3](sd3.png "a woman wearing a white jacket, black hat and black pants is standing in a field, the hat writes SD3")
-![bucket_alibaba](bucket_ali.png "a person wearing a white shoe, carrying a white bucket with text \"alimama\" on it")
+![SD3](sd3.png)
+
+<center>a woman wearing a white jacket, black hat and black pants is standing in a field, the hat writes SD3</center>
+
+![bucket_alibaba](bucket_ali.png )
+
+<center>a person wearing a white shoe, carrying a white bucket with text \"alimama\" on it</center>
 
 Some advantages of the inpainting model:
 * Due to the SD3 16-channel VAE and 1024 high-res generation ability, the inpainting model maintains better non-inpainting areas (including text).