Replace Arxiv with ICCV bibtex entry (open-mmlab#1536)

* Replace Arxiv with ICCV bibtex entry

* Update configs/segmenter/README.md

Co-authored-by: MengzhangLI <[email protected]>

Co-authored-by: MengzhangLI <[email protected]>

Author: SBCV

configs/segmenter/README.md

@@ -22,10 +22,11 @@ Image segmentation is often ambiguous at the level of individual image patches a
 </div>
 
 ```bibtex
-@article{strudel2021Segmenter,
-  title={Segmenter: Transformer for Semantic Segmentation},
-  author={Strudel, Robin and Ricardo, Garcia, and Laptev, Ivan and Schmid, Cordelia},
-  journal={arXiv preprint arXiv:2105.05633},
+@inproceedings{strudel2021segmenter,
+  title={Segmenter: Transformer for semantic segmentation},
+  author={Strudel, Robin and Garcia, Ricardo and Laptev, Ivan and Schmid, Cordelia},
+  booktitle={Proceedings of the IEEE/CVF International Conference on Computer Vision},
+  pages={7262--7272},
   year={2021}
 }
 ```