[Docs] Fix Faster R-CNN Readme

[sudoAimer]

Motivation

The Link in Faster R-CNN ReadMe is wrong.

Modification

Fix the link of faster_rcnn_r50_fpn_1x_coco.py to faster_rcnn_r50_fpn_giou_1x_coco.py

[CLAassistant]

All committers have signed the CLA.

[RangiLyu]

Thanks for your contribution! Please sign the CLA first.

[RangiLyu]

And the lint failed, Please run pip install pre-commit and then run pre-commit run --all-files to fix the lint.

[codecov]

Codecov Report

Base: 64.08% // Head: 64.08% // No change to project coverage 👍

Coverage data is based on head (bd19f63) compared to base (2825598).
Patch has no changes to coverable lines.

Additional details and impacted files

@@           Coverage Diff           @@
##              dev    #8803   +/-   ##
=======================================
  Coverage   64.08%   64.08%           
=======================================
  Files         361      361           
  Lines       29538    29538           
  Branches     5023     5023           
=======================================
  Hits        18928    18928           
- Misses       9592     9593    +1     
+ Partials     1018     1017    -1     

Flag	Coverage Δ
unittests	64.08% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
mmdet/core/bbox/samplers/random_sampler.py	75.00% <0.00%> (-5.56%)	⬇️
mmdet/core/bbox/assigners/sim_ota_assigner.py	80.00% <0.00%> (-3.64%)	⬇️
mmdet/datasets/pipelines/transforms.py	75.88% <0.00%> (+0.24%)	⬆️
mmdet/core/post_processing/bbox_nms.py	79.10% <0.00%> (+4.47%)	⬆️

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[ZwwWayne]

Hi @sudoAimer ,
Thanks for your kind PR. It seems that there are conflicts between your PR and the targeted branch. Could you solve the conflicts so that we could eventually merge this PR?

You can find more details in the place shown as below:

[OpenMMLab-Assistant005]

Hi @sudoAimer ！First of all, we want to express our gratitude for your significant PR in the MMDet project. Your contribution is highly appreciated, and we are grateful for your efforts in helping improve this open-source project during your personal time. We believe that many developers will benefit from your PR.

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