- fix markup error

- remove silly emoticon

Doc/whatsnew/3.0.rst

@@ -704,7 +704,7 @@ new powerful features added:
 
 * :pep:`3110`: Catching exceptions.  You must now use
   :keyword:`except` *SomeException* :keyword:`as` *variable* instead
-  of :keyword:`except` *SomeException*, variable*.  Moreover, the
+  of :keyword:`except` *SomeException*, *variable*.  Moreover, the
   *variable* is explicitly deleted when the :keyword:`except` block
   is left.
 
@@ -726,7 +726,7 @@ new powerful features added:
   traceback printed when an unhandled exception occurs walks the chain
   of :attr:`__cause__` and :attr:`__context__` attributes and prints a
   separate traceback for each component of the chain, with the primary
-  exception at the top.  (Java users may recognize this behavior. :-)
+  exception at the top.  (Java users may recognize this behavior.)
 
 * :pep:`3134`: Exception objects now store their traceback as the
   :attr:`__traceback__` attribute.  This means that an exception