doc/haskell: fix typos (close #9561)

Changed files
+2 -2
doc
+2 -2
doc/haskell-users-guide.xml
···
nixos.coreutils coreutils-8.23
</programlisting>
<para>
-
If your system responds like that (most NixOS installatios will),
then the attribute path to <literal>haskellPackages</literal> is
<literal>nixos.haskellPackages</literal>. Thus, if you want to
use <literal>nix-env</literal> without giving an explicit
···
<para>
<link xlink:href="http://lists.science.uu.nl/pipermail/nix-dev/2015-April/016912.html">Part
3</link> describes the infrastructure that keeps the
-
Haskell package set in Nixpkgs uptodate.
</para>
</listitem>
</itemizedlist>
···
nixos.coreutils coreutils-8.23
</programlisting>
<para>
+
If your system responds like that (most NixOS installations will),
then the attribute path to <literal>haskellPackages</literal> is
<literal>nixos.haskellPackages</literal>. Thus, if you want to
use <literal>nix-env</literal> without giving an explicit
···
<para>
<link xlink:href="http://lists.science.uu.nl/pipermail/nix-dev/2015-April/016912.html">Part
3</link> describes the infrastructure that keeps the
+
Haskell package set in Nixpkgs up-to-date.
</para>
</listitem>
</itemizedlist>