Typo fix

Author: Macabe222

book/plugins/how-to-guides/raise-visible-warning.md

@@ -4,7 +4,7 @@
 Warnings raised by the Python `warning` library are suppressed by defualt when using the command line interface (CLI). In order to make sure the warnings raised by your plugin are visible in the CLI you must use the `RachisWarning` subclass. This class can be imported from the QIIME2 framework, specifically from `qiime2.core.exceptions`. Below is an [excerpt](https://github.com/qiime2/q2-feature-table/blob/b6a312e612338db0f69c97641372e7f0005b43f5/q2_feature_table/_merge.py#L90C12-L93C14) from from the `q2-feature-table` plugin that raises such a `RachisWarning`.
 
 ```python
-from qiime2.core.excpetions import RachisWarnings
+from qiime2.core.exceptions import RachisWarning
 
 def merge_taxa(data: pd.DataFrame) -> pd.DataFrame:
     if len(data) > 1: