change formatting

doc/syntax.rst

@@ -491,9 +491,9 @@ Range Format Specifications
 Format specifications for range types have the following syntax:
 
 .. productionlist:: sf
-   range_format_spec: [":" [`n`][`range_type`][`range_underlying_spec`]]
+   range_format_spec: [":" ["n"][`range_type`][`range_underlying_spec`]]
 
-The `n` option formats the range without the opening and closing brackets. 
+The ``'n'`` option formats the range without the opening and closing brackets. 
 
 The available presentation types for `range_type` are:
 
@@ -505,18 +505,18 @@ The available presentation types for `range_type` are:
 | ``'?s'``| Debug format. The range is formatted as an escaped       |        
 |         | string.                                                  |
 +---------+----------------------------------------------------------+
-| none    | Default format. The range is formatted with a separator  |
+| none    | Default format. The range is formatted with a separator. |
 |         |                                                          |
 +---------+----------------------------------------------------------+
 
-If `range_type` is `s` or `?s`, the underlying type of the range must be a character type. The 
-`n` option and `range_underlying_spec` are mutually exclusive with `s` and `?s`. 
+If `range_type` is ``'s'`` or ``'?s'``, the underlying type of the range must be a character type. The 
+``'n'`` option and `range_underlying_spec` are mutually exclusive with ``'s'`` and ``'?s'``. 
 
-The `underlying_spec` is parsed based on the formatter of the range's
+The `range_underlying_spec` is parsed based on the formatter of the range's
 reference type.
 
 By default, a range of characters or strings is printed escaped and quoted. But
-if any `underlying_spec` is provided (even if it is empty), then the characters
+if any `range_underlying_spec` is provided (even if it is empty), then the characters
 or strings are printed according to the provided specification.
 
 Examples::