Updating docs to v0.9

[taylorbell57]

Simply incrementing docs to point to the new v0.9 (I will make v0.9 once this PR is merged).

[taylorbell57]

So Codecov just hit v5.0 which means that we need to slightly change the way in which we use it for the automated testing on GitHib (read more). It was just a small, simple tweak though and we should be good to go now

[codecov-commenter]

Codecov Report

Merging #518 (888c7cc) into main (8808897) will decrease coverage by 0.55%. The diff coverage is 52.09%.

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@@            Coverage Diff             @@
##             main     #518      +/-   ##
==========================================
- Coverage   58.08%   57.54%   -0.55%     
==========================================
  Files          91       92       +1     
  Lines       10937    11074     +137     
==========================================
+ Hits         6353     6372      +19     
- Misses       4584     4702     +118     

Impacted Files	Coverage Δ
src/eureka/S3_data_reduction/plots_s3.py	68.53% <27.50%> (-6.80%)	:arrow_down:
src/eureka/S3_data_reduction/s3_reduce.py	87.41% <50.00%> (-1.77%)	:arrow_down:
src/eureka/lib/centerdriver.py	67.56% <60.86%> (-24.75%)	:arrow_down:
src/eureka/lib/gaussian_min.py	87.17% <87.17%> (ø)
src/eureka/S3_data_reduction/nircam.py	74.86% <100.00%> (+1.17%)	:arrow_up:
src/eureka/lib/__init__.py	100.00% <100.00%> (ø)

... and 2 files with indirect coverage changes

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