README: Faster RCNN fp16 config link fix

[apatsekin]

README: Faster RCNN fp16 config link fix

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Motivation

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Modification

Please briefly describe what modification is made in this PR.

BC-breaking (Optional)

Does the modification introduce changes that break the backward-compatibility of the downstream repos?
If so, please describe how it breaks the compatibility and how the downstream projects should modify their code to keep compatibility with this PR.

Use cases (Optional)

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Checklist

1. Pre-commit or other linting tools are used to fix the potential lint issues.
2. The modification is covered by complete unit tests. If not, please add more unit test to ensure the correctness.
3. If the modification has potential influence on downstream projects, this PR should be tested with downstream projects, like MMDet or MMCls.
4. The documentation has been modified accordingly, like docstring or example tutorials.

[CLAassistant]

All committers have signed the CLA.

[ZwwWayne]

Hi @apatsekin ,
Thanks for your kind contribution. Would you like to fix the lint issue so that we could merge this PR?
The details can be found by clicking the item of lint check as shown below

[hhaAndroid]

@apatsekin

[codecov]

Codecov Report

Base: 64.19% // Head: 64.17% // Decreases project coverage by -0.02% ⚠️

Coverage data is based on head (3e56e9a) compared to base (e71b499).
Patch has no changes to coverable lines.

Additional details and impacted files

@@            Coverage Diff             @@
##              dev    #9366      +/-   ##
==========================================
- Coverage   64.19%   64.17%   -0.03%     
==========================================
  Files         361      361              
  Lines       29544    29583      +39     
  Branches     5023     5033      +10     
==========================================
+ Hits        18966    18984      +18     
- Misses       9570     9590      +20     
- Partials     1008     1009       +1     

Flag	Coverage Δ
unittests	64.14% <ø> (-0.03%)	⬇️

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

Impacted Files	Coverage Δ
mmdet/utils/util_distribution.py	22.50% <0.00%> (-7.13%)	⬇️
mmdet/core/data_structures/general_data.py	82.55% <0.00%> (-3.37%)	⬇️
mmdet/apis/inference.py	47.00% <0.00%> (-1.67%)	⬇️
mmdet/core/bbox/assigners/max_iou_assigner.py	72.36% <0.00%> (-1.32%)	⬇️
mmdet/models/detectors/rpn.py	51.47% <0.00%> (-0.84%)	⬇️
mmdet/apis/train.py	13.40% <0.00%> (-0.29%)	⬇️
mmdet/datasets/cityscapes.py	13.37% <0.00%> (ø)
mmdet/datasets/pipelines/transforms.py	76.22% <0.00%> (+0.22%)	⬆️
...det/core/bbox/assigners/mask_hungarian_assigner.py	97.43% <0.00%> (+8.79%)	⬆️
mmdet/core/bbox/assigners/hungarian_assigner.py	97.36% <0.00%> (+8.99%)	⬆️

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