add warnings about failing parts

Author: be-marc

book/chapters/appendices/solutions.qmd

@@ -2195,13 +2195,11 @@ adult_subset$set_col_roles("race", add_to = "pta")
 
 ::: {.callout-warning}
 
-Currently, there is a bug in the `mlr3fairness` package that let the next code fail.
-See https://github.com/mlr-org/mlr3fairness/issues/79.
+Currently, there is a bug in the `mlr3fairness` package that causes the following code chunk to fail.
+See https://github.com/mlr-org/mlr3fairness/issues/79 for more details.
 
 :::
 
-
-
 And evaluate our measure again:
 
 ```{r solutions-125}

book/chapters/chapter9/preprocessing.qmd

@@ -238,7 +238,8 @@ magick::image_trim(fig)
 
 ::: {.callout-warning}
 
-Currently, there is a bug in the `mlr3pipelines` package that let the next code fail.
+Currently, there is a bug in the mlr3pipelines package that causes the following code chunk to fail.
+See https://github.com/mlr-org/mlr3pipelines/issues/894 for more details.
 
 :::
 
@@ -451,7 +452,8 @@ tsk_ames_ext$data(1,
 
 ::: {.callout-warning}
 
-Currently, there is a bug in the `mlr3pipelines` package that let the next code fail.
+This code chunk does not work due to the bug in the `mlr3pipelines` package.
+See the warning message above for more details.
 
 :::