fix declaration of StatisticsError

diff --git a/Doc/library/statistics.rst b/Doc/library/statistics.rst
index f3eca8cc37146b0bcb79b8085d802d0632af54c4..fc99d818d57864da7d89a86f15eec6ea2336b7f8 100644 (file)
--- a/Doc/library/statistics.rst
+++ b/Doc/library/statistics.rst
@@ -454,9 +454,9 @@ Exceptions
 
 A single exception is defined:
 
-:exc:`StatisticsError`
+.. exception:: `StatisticsError`
 
-Subclass of :exc:`ValueError` for statistics-related exceptions.
+   Subclass of :exc:`ValueError` for statistics-related exceptions.
 
 ..
    # This modelines must appear within the last ten lines of the file.