docs: Update examples

[antoinedemathelin]

Fix and simplify all minimal examples.

Fix CCSA on 1d classification

[codecov-commenter]

Codecov Report

Merging #49 (b8565f2) into master (f56f6a1) will decrease coverage by 0.08%.
The diff coverage is 72.22%.

@@            Coverage Diff             @@
##           master      #49      +/-   ##
==========================================
- Coverage   93.79%   93.71%   -0.09%     
==========================================
  Files          29       29              
  Lines        3629     3643      +14     
==========================================
+ Hits         3404     3414      +10     
- Misses        225      229       +4     

Impacted Files	Coverage Δ
adapt/feature_based/_adda.py	94.93% <ø> (ø)
adapt/feature_based/_cdan.py	92.30% <ø> (ø)
adapt/feature_based/_coral.py	97.95% <ø> (ø)
adapt/feature_based/_dann.py	100.00% <ø> (ø)
adapt/feature_based/_deepcoral.py	95.16% <ø> (ø)
adapt/feature_based/_mcd.py	97.41% <ø> (ø)
adapt/feature_based/_mdd.py	94.93% <ø> (ø)
adapt/feature_based/_sa.py	96.42% <ø> (ø)
adapt/feature_based/_wdgrl.py	100.00% <ø> (ø)
adapt/instance_based/_kliep.py	94.79% <ø> (ø)
... and 11 more

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 586bcc0...b8565f2. Read the comment docs.