improve grammar
diff --git a/Doc/library/hashlib-blake2.rst b/Doc/library/hashlib-blake2.rst
index 22efe69..aca24b4 100644
--- a/Doc/library/hashlib-blake2.rst
+++ b/Doc/library/hashlib-blake2.rst
@@ -370,8 +370,8 @@
       /  \
      00  01
 
-The example uses 64-byte internal digests, and returns the 32-byte final
-digest.
+This example uses 64-byte internal digests, and returns the 32-byte final
+digest::
 
     >>> from hashlib import blake2b
     >>>