Fix some references in the Text.Parsec.Error documentation

Text/Parsec/Error.hs

@@ -40,14 +40,14 @@ import Text.Parsec.Pos
 -- languages. Each kind of message is generated by different combinators:
 --
 --     * A 'SysUnExpect' message is automatically generated by the
---       'satisfy' combinator. The argument is the
+--       'Text.Parsec.Combinator.satisfy' combinator. The argument is the
 --       unexpected input.
 --
---     * A 'UnExpect' message is generated by the 'unexpected'
+--     * A 'UnExpect' message is generated by the 'Text.Parsec.Prim.unexpected'
 --       combinator. The argument describes the
 --       unexpected item.
 --
---     * A 'Expect' message is generated by the '<?>'
+--     * A 'Expect' message is generated by the 'Text.Parsec.Prim.<?>'
 --       combinator. The argument describes the expected item.
 --
 --     * A 'Message' message is generated by the 'fail'
@@ -74,7 +74,7 @@ instance Eq Message where
 -- < Compares two error messages without looking at their content. Only
 -- the constructors are compared where:
 -- 
--- > SysUnExpect < UnExpect < Expect < Message
+-- > 'SysUnExpect' < 'UnExpect' < 'Expect' < 'Message'
 
 instance Ord Message where
     compare msg1 msg2 = compare (fromEnum msg1) (fromEnum msg2)
@@ -90,7 +90,7 @@ messageString (Message     s) = s
 -- | The abstract data type @ParseError@ represents parse errors. It
 -- provides the source position ('SourcePos') of the error
 -- and a list of error messages ('Message'). A @ParseError@
--- can be returned by the function 'parse'. @ParseError@ is an
+-- can be returned by the function 'Text.Parsec.Prim.parse'. @ParseError@ is an
 -- instance of the 'Show' class. 
 
 data ParseError = ParseError !SourcePos [Message]