Fix syntax error in layout_tests.md

Change-Id: Ibe8ccc0be09764fe4aca158dd9fec026bd7b4ce2
Reviewed-on: https://chromium-review.googlesource.com/592414Reviewed-by: Quinten Yearsley <qyearsley@chromium.org>
Commit-Queue: Robert Ma <robertma@chromium.org>
Cr-Commit-Position: refs/heads/master@{#491435}

docs/testing/layout_test_expectations.md

@@ -236,7 +236,7 @@ Bug(darin) [ Mac10.9 Debug ] fast/html/keygen.html [ Skip ]
 * `WontFix` implies `Skip` and also indicates that we don't have any plans to
   make the test pass.
 * `WontFix` lines always go in the
-  [NeverFixTests file]((../../third_party/WebKit/LayoutTests/NeverFixTests) as
+  [NeverFixTests file](../../third_party/WebKit/LayoutTests/NeverFixTests) as
   we never intend to fix them. These are just for tests that only apply to some
   subset of the platforms we support.
 * `WontFix` and `Skip` must be used by themselves and cannot be specified

docs/testing/layout_tests.md

@@ -220,7 +220,7 @@ There are two ways to run layout tests with additional command-line arguments:
   ```
 
   This will create new "virtual" tests of the form
-  `virtual/blocking_repaint/fast/repaint/...`` which correspond to the files
+  `virtual/blocking_repaint/fast/repaint/...` which correspond to the files
   under `LayoutTests/fast/repaint` and pass `--blocking-repaint` to
   content_shell when they are run.