user's guide: Fix some accidental triple-` quote

Reviewed By: austin

Differential Revision: https://phabricator.haskell.org/D1503

docs/users_guide/codegens.rst

@@ -81,7 +81,7 @@ output to facilitate porting GHC itself to a new platform. This mode
 produces much slower code though so it's unlikely your version of GHC
 was built this way. If it has then the native code generator probably
 won't be available. You can check this information by calling
-```ghc --info`` (see :ref:`ghc-info`).
+``ghc --info`` (see :ref:`ghc-info`).
 
 .. _unreg:
 
@@ -112,4 +112,4 @@ to build GHC with the appropriate options set. Consult the GHC Building
 Guide for details.
 
 You can check if your GHC is unregisterised by calling
-```ghc --info`` (see :ref:`ghc-info`).
+``ghc --info`` (see :ref:`ghc-info`).

docs/users_guide/ffi-chap.rst

@@ -10,7 +10,7 @@ Foreign function interface (FFI)
 
 GHC (mostly) conforms to the Haskell Foreign Function Interface, whose
 definition is part of the Haskell Report on
-```http://www.haskell.org/`` <http://www.haskell.org/>`__.
+``http://www.haskell.org/`` <http://www.haskell.org/>`__.
 
 FFI support is enabled by default, but can be enabled or disabled
 explicitly with the ``-XForeignFunctionInterface`` flag.

docs/users_guide/glasgow_exts.rst

@@ -9985,7 +9985,7 @@ more details, see
    source code).
 
 -  The arrows web page at
-   ```http://www.haskell.org/arrows/`` <http://www.haskell.org/arrows/>`__.
+   ``http://www.haskell.org/arrows/`` <http://www.haskell.org/arrows/>`__.
 
 With the ``-XArrows`` flag, GHC supports the arrow notation described in
 the second of these papers, translating it using combinators from the

docs/users_guide/separate_compilation.rst

@@ -1077,7 +1077,7 @@ off with ``-fno-warn-orphans``, and ``-Werror`` will make the
 compilation fail if the warning is issued.
 
 You can identify an orphan module by looking in its interface file,
-``M.hi``, using the ```--show-iface`` :ref:`mode <modes>`. If there is a
+``M.hi``, using the ``--show-iface`` :ref:`mode <modes>`. If there is a
 ``[orphan module]`` on the first line, GHC considers it an orphan
 module.