Fix broken HTML in third_party/bazel/tools/build_defs/pkg/README.md

Also, specify the code formatter in _config.yml. It's not needed locally, but
other people do it - it might help on docs.bazel.build

RELNOTES: None.
PiperOrigin-RevId: 220503498
diff --git a/site/_config.yml b/site/_config.yml
index 576049e..813609e 100644
--- a/site/_config.yml
+++ b/site/_config.yml
@@ -3,6 +3,8 @@
 kramdown:
   syntax_highlighter: rouge
 
+highlighter: rouge
+
 paginate: 10
 sass:
   sass_dir: _sass
diff --git a/tools/build_defs/pkg/README.md b/tools/build_defs/pkg/README.md
index b1b962f..ca55784 100644
--- a/tools/build_defs/pkg/README.md
+++ b/tools/build_defs/pkg/README.md
@@ -20,7 +20,6 @@
 This example is a simplification of the debian packaging of Bazel:
 
 ```python
-
 load("@bazel_tools//tools/build_defs/pkg:pkg.bzl", "pkg_tar", "pkg_deb")
 
 pkg_tar(
@@ -118,7 +117,7 @@
         <code>String, default to 'tar'</code>
         <p>
             The extension for the resulting tarball. The output
-            file will be '<i>name<i>.<i>extension<i>'. This extension
+            file will be '<i>name</i>.<i>extension</i>'. This extension
             also decide on the compression: if set to <code>tar.gz</code>
             or <code>tgz</code> then gzip compression will be used and
             if set to <code>tar.bz2</code> or <code>tar.bzip2</code> then
@@ -284,7 +283,6 @@
       </td>
     </tr>
   </tbody>
-  </tbody>
 </table>
 
 <a name="pkg_deb"></a>
@@ -448,7 +446,6 @@
       </td>
     </tr>
   </tbody>
-  </tbody>
 </table>
 
 <a name="pkg_rpm"></a>
@@ -517,5 +514,4 @@
       </td>
     </tr>
   </tbody>
-  </tbody>
 </table>