docs: Update model_builder.py to resolve warning in documentation build (#797)

Author: c0d33ngr

pymc_marketing/model_builder.py

@@ -505,7 +505,7 @@ def predict(
         for each input row is the expected output value, computed as the mean of MCMC samples.
 
         Parameters
-        ---------
+        ----------
         X_pred : array-like if sklearn is available, otherwise array, shape (n_pred, n_features)
             The input data used for prediction.
         extend_idata : Boolean determining whether the predictions should be added to inference data object.
@@ -553,7 +553,7 @@ def sample_prior_predictive(
         Sample from the model's prior predictive distribution.
 
         Parameters
-        ---------
+        ----------
         X_pred : array, shape (n_pred, n_features)
             The input data used for prediction using prior distribution.
         samples : int
@@ -605,7 +605,7 @@ def sample_posterior_predictive(
         Sample from the model's posterior predictive distribution.
 
         Parameters
-        ---------
+        ----------
         X_pred : array, shape (n_pred, n_features)
             The input data used for prediction using prior distribution..
         extend_idata : Boolean determining whether the predictions should be added to inference data object.
@@ -687,7 +687,7 @@ def predict_posterior(
         Generate posterior predictive samples on unseen data.
 
         Parameters
-        ---------
+        ----------
         X_pred : array-like if sklearn is available, otherwise array, shape (n_pred, n_features)
             The input data used for prediction.
         extend_idata : Boolean determining whether the predictions should be added to inference data object.