wording and capitalization

Author: adqm

peps/pep-0798.rst

@@ -343,7 +343,8 @@ cases:
 * The phrasing of some other existing error messages should similarly be
   adjusted to account for the presence of the new syntax, and/or to clarify
   ambiguous or confusing cases relating to unpacking more generally
-  (particularly those mentioned in :ref:`pep798-moregeneral`), for example::
+  (particularly the cases mentioned in :ref:`pep798-moregeneral`), for
+  example::
 
     >>> [*x if x else y]
       File "<stdin>", line 1
@@ -850,7 +851,7 @@ structures:
 
 .. code:: javascript
 
-    // JavaScript
+    // javascript
     [[1,2,3], [], [4,5]].flatMap(xs => [...xs, ...xs])
 
 .. code:: haskell