correct mistake in the documentation of index<blah>Array# and
index<blah>OffAddr#. The documentation on primitives is all wildly
out of date in other ways, though.
</para>
<para>
-Immutable byte arrays are straightforward to index (all indices in bytes):
+Immutable byte arrays are straightforward to index (all indices are in
+units of the size of the object being read):
<programlisting>
indexCharArray# :: ByteArray# -> Int# -> Char#