Update docs/guides/unreachable.rst: commit suggestion

Co-authored-by: Sebastian Rittau <[email protected]>

Author: wyattscarpenter

docs/guides/unreachable.rst

@@ -86,7 +86,13 @@ and is also present in ``typing_extensions`` starting at version 4.1.
 However, it is also possible to define a similar function in your own
 code, for example if you want to customize the runtime error message.
 
-This use of match statements for comprehensive matching is common enough that some typecheckers have direct support for checking all match statements for exhaustiveness, regardless of whether or not they have an assert_never-style function in their default arm. For instance, in pyright this can be enabled by enabling the diagnostic code reportMatchNotExhaustive (on by default in strict mode), and in mypy it can be enabled by enabling the error code exhaustive-match. 
+This use of match statements for comprehensive matching is common
+enough that some typecheckers have direct support for checking all match
+statements for exhaustiveness, regardless of whether or not they have an
+``assert_never``-style function in their default arm. For instance, in pyright
+this can be enabled by enabling the diagnostic code ``reportMatchNotExhaustive``
+(on by default in strict mode), and in mypy it can be enabled by enabling
+the error code ``exhaustive-match``.
 
 You can also use ``assert_never()`` with a sequence of ``if`` statements: