update tests and snapshots

[clarkliming]

update

1. use P(>|Z|) instead of P(>Z)
2. minor fix to pass the functions to the default contrast functions

[github-actions]

Code Coverage Summary

Filename                     Stmts    Miss  Cover    Missing
-------------------------  -------  ------  -------  --------------------
R/bias.R                        11       0  100.00%
R/predict_couterfactual.R       48       1  97.92%   55
R/prediction_cf.R                3       0  100.00%
R/robin_glm.R                   31       0  100.00%
R/treatment_effect.R           109       3  97.25%   42, 78-79
R/utils.R                       21       0  100.00%
R/variance_anhecova.R           44      19  56.82%   28, 43-44, 57, 63-78
R/variance_hc.R                  9       0  100.00%
TOTAL                          276      23  91.67%

Diff against main

Filename                Stmts    Miss  Cover
--------------------  -------  ------  -------
R/treatment_effect.R        0      +1  -0.92%
TOTAL                       0      +1  -0.36%

Results for commit: b19d728

Minimum allowed coverage is 80%

♻️ This comment has been updated with latest results

[github-actions]

Unit Tests Summary

 1 files   6 suites   0s ⏱️
23 tests 14 ✅  9 💤 0 ❌
64 runs  54 ✅ 10 💤 0 ❌

Results for commit b19d728.

♻️ This comment has been updated with latest results.

[clarkliming]

there are some issue with the url checker. the url works well