Update hash code test for RR objects for 32-bit machines

Also fix the comments -- these hash codes differ based on 32-bit
v. 64-bit, not endianness.

M2/Macaulay2/m2/basictests/hashcodes.m2

@@ -22,7 +22,7 @@ assert( (hash true) === 444777 )
 assert( (hash false) === 777333 )
 
 -- these might change if our floating point implementation changes, but let's check anyway:
-assert( hash 1.23p200 === 18446744072207201388 -* big endian *- or hash 1.23p200 == -640232547 -* little endian *- )
+assert( hash 1.23p200 === 18446744072207201388 -* 64-bit *- or hash 1.23p200 == 18446744073069319069 -* 32-bit *- )
 
 -- Local Variables:
 -- compile-command: "make -C $M2BUILDDIR/Macaulay2/packages/Macaulay2Doc/basictests hashcodes.okay"