fix: colbert name and docs

[LongxingTan]

Description

This PR ...

Checklist

• Linked issues (if existing)
• Amended changelog.md for large changes (and added myself there as contributor)
• Added/modified tests
• Used pre-commit hooks when committing to ensure that code is compliant with hooks. Install hooks with pre-commit install.
  To run hooks independent of commit, execute pre-commit run --all-files

Thank you for joining. Have fun coding!

[codecov]

Codecov Report

Attention: Patch coverage is 37.50000% with 15 lines in your changes missing coverage. Please review.

Project coverage is 55.85%. Comparing base (8b11fe9) to head (67e96cf).
Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
src/retrievals/data/dataset.py	33.33%	6 Missing ⚠️
src/retrievals/models/retrieval_auto.py	0.00%	3 Missing ⚠️
src/retrievals/models/rerank.py	0.00%	2 Missing ⚠️
src/retrievals/trainer/tuner.py	60.00%	2 Missing ⚠️
src/retrievals/data/collator.py	66.66%	1 Missing ⚠️
src/retrievals/models/utils.py	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master      #72      +/-   ##
==========================================
- Coverage   55.91%   55.85%   -0.07%     
==========================================
  Files          36       37       +1     
  Lines        2613     2632      +19     
==========================================
+ Hits         1461     1470       +9     
- Misses       1152     1162      +10     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.