Fix a formatting error in the user's guide
authorEric Seidel <gridaphobe@gmail.com>
Fri, 22 Jan 2016 15:16:46 +0000 (16:16 +0100)
committerBen Gamari <ben@smart-cactus.org>
Fri, 22 Jan 2016 17:50:27 +0000 (18:50 +0100)
commit6e5f8285005895fe4f1915ddea99b72f8ee91834
tree49ce035ee80c7b870f907fc3fe4fd34bb26ffb44
parent65881c014f81f62f90dcb0977528411010b1d1a7
Fix a formatting error in the user's guide

```
``CallStack``s
```

seems to confuse ReST into producing an extended code-span

```
``CallStack``\s
```

fixes it, but there may be a better solution

Test Plan: build the user's guide and inspect the last paragraph of
"9.14.4.5. Implicit CallStacks"

Reviewers: bgamari

Reviewed By: bgamari

Projects: #ghc

Differential Revision: https://phabricator.haskell.org/D1798
docs/users_guide/glasgow_exts.rst