Change .. code:: to .. code-block::

Sphinx uses .. code-block:: directives to enable highlighting:
http://sphinx-doc.org/markup/code.html#directive-code-block

Use

  for i in *.rst; do
        sed -i 's/code::/code-block::/g' $i
    done

to update these strings to enable proper highlighting.

Note: A have disabled the windows "bash" one, because the highlighting
is broken anyway...

events/itemfinished.rst

@@ -4,7 +4,7 @@ ItemFinished
 Generated when Syncthing ends synchronizing a file to a newer version. A
 successful operation:
 
-.. code:: json
+.. code-block:: json
 
     {
         "id": 93,
@@ -21,7 +21,7 @@ successful operation:
 
 An unsuccessful operation:
 
-.. code:: json
+.. code-block:: json
 
     {
         "id": 44,