Remove incorrect usage of :const: in documentation.
diff --git a/Doc/library/decimal.rst b/Doc/library/decimal.rst
index ebb18bb..3495241 100644
--- a/Doc/library/decimal.rst
+++ b/Doc/library/decimal.rst
@@ -1294,8 +1294,8 @@
:const:`NaN` is involved. A test for equality where one of the operands is a
quiet or signaling :const:`NaN` always returns :const:`False` (even when doing
``Decimal('NaN')==Decimal('NaN')``), while a test for inequality always returns
-:const:`True`. An attempt to compare two Decimals using any of the :const:'<',
-:const:'<=', :const:'>' or :const:'>=' operators will raise the
+:const:`True`. An attempt to compare two Decimals using any of the ``<``,
+``<=``, ``>`` or ``>=`` operators will raise the
:exc:`InvalidOperation` signal if either operand is a :const:`NaN`, and return
:const:`False` if this signal is trapped. Note that the General Decimal
Arithmetic specification does not specify the behavior of direct comparisons;