markup & punctuation fixes

pep-3112.txt

@@ -62,7 +62,7 @@ Grammar Changes
 ===============
 
 The proposed syntax is an extension of the existing string
-syntax. [#stringliterals]_
+syntax [#stringliterals]_.
 
 The new syntax for strings, including the new bytes literal, is::
 
@@ -89,12 +89,12 @@ The following additional restrictions apply only to bytes literals
   between 1 and 127 inclusive, regardless of any encoding
   declaration [#encodings]_ in the source file.
 
-- The Unicode-specific escape sequences ``\u``*xxxx*,
+- The Unicode-specific escape sequences ``\u``\ *xxxx*,
-  ``\U``*xxxxxxxx*, and ``\N{``*name*``}`` are unrecognized in
+  ``\U``\ *xxxxxxxx*, and ``\N{``\ *name*\ ``}`` are unrecognized in
   Python 2.x and forbidden in Python 3000.
 
 Adjacent bytes literals are subject to the same concatenation rules as
-adjacent string literals. [#concat]_  A bytes literal adjacent to a
+adjacent string literals [#concat]_.  A bytes literal adjacent to a
 string literal is an error.
 
 
@@ -127,7 +127,7 @@ with the ``bytes`` type.
 A bytes literal produces a new object each time it is evaluated, like
 list displays and unlike string literals.  This is necessary because
 bytes literals, like lists and unlike strings, are
-mutable. [#eachnew]_
+mutable [#eachnew]_.
 
 
 Reference Implementation