[Docs] Add header for files

[xvjiarui]

No description provided.

[codecov]

Codecov Report

Merging #1181 (acc5cd1) into master (04daea4) will increase coverage by 0.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #1181      +/-   ##
==========================================
+ Coverage   68.27%   68.28%   +0.01%     
==========================================
  Files         160      160              
  Lines       10599    10603       +4     
  Branches     1937     1937              
==========================================
+ Hits         7236     7240       +4     
  Misses       2979     2979              
  Partials      384      384              

Flag	Coverage Δ
unittests	68.28% <ø> (+0.01%)	⬆️

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

Impacted Files	Coverage Δ
mmcv/__init__.py	100.00% <ø> (ø)
mmcv/arraymisc/__init__.py	100.00% <ø> (ø)
mmcv/arraymisc/quantization.py	100.00% <ø> (ø)
mmcv/cnn/__init__.py	100.00% <ø> (ø)
mmcv/cnn/alexnet.py	26.08% <ø> (ø)
mmcv/cnn/bricks/__init__.py	100.00% <ø> (ø)
mmcv/cnn/bricks/activation.py	87.50% <ø> (ø)
mmcv/cnn/bricks/context_block.py	96.96% <ø> (ø)
mmcv/cnn/bricks/conv.py	100.00% <ø> (ø)
mmcv/cnn/bricks/conv2d_adaptive_padding.py	94.73% <ø> (ø)
... and 127 more

---

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[innerlee]

May you put the script in tools/

[hellock]

Apply this to cpp/cu/cuh files too.

[xvjiarui]

@hellock done

[hellock]

In some files, e.g., cu, cpp, Open-MMLab is not replaced with OpenMMLab.

[xvjiarui]

@hellock All files are replaced.