fix rendreing issue due to file extension and other warnings (ros2#107)

* fix rendreing issue due to file extension and other warnings

Signed-off-by: William Woodall <[email protected]>

* fix internal link

Author: wjwwood

source/Releases/Release-Dashing-Diademata renamed to source/Releases/Release-Dashing-Diademata.rst

@@ -25,11 +25,11 @@ Changes since the Crystal release
 
 Changes since the `Crystal Clemmys <Release-Crystal-Clemmys>` release:
 
-* New API in `rmw`, a fini function for `rmw_context_t`:
+* New API in ``rmw``, a fini function for ``rmw_context_t``:
 
  * `rmw_context_fini <https://github.com/ros2/rmw/blob/c518842f6f82910482470b40c221c268d30691bd/rmw/include/rmw/init.h#L111-L136>`_
- 
-* Modification of `rmw`, now passes `rmw_context_t` to `rmw_create_wait_set`:
+
+* Modification of ``rmw``, now passes ``rmw_context_t`` to ``rmw_create_wait_set``:
 
  * `rmw_create_wait_set <https://github.com/ros2/rmw/blob/c518842f6f82910482470b40c221c268d30691bd/rmw/include/rmw/rmw.h#L522-L543>`_