Fix style in Request Life Cycle section.

Co-authored-by: pancho horrillo <pedrofelipe.horrillo@bbva.com>

docs/source/theory/request_life_cycle.rst

@@ -8,49 +8,53 @@ answered by the `User HTTP Interface`.
 
 
 1. request
+----------
 
-   The user makes a request to the `User HTTP Interface`.
+The user makes a request to the `User HTTP Interface`.
 
-   - The request is matched against the route table
+- The request is matched against the route table
 
-   - ``kapow`` provides a `HANDLER_ID` to identify this request and don't mix it
-     with other requests that could be running concurrently.
+- ``kapow`` provides a `HANDLER_ID` to identify this request and don't mix it
+  with other requests that could be running concurrently.
 
 2. spawn
+--------
 
-   ``kapow`` spawns the executable specified as entrypoint in the matching
-   route.
+``kapow`` spawns the executable specified as entrypoint in the matching
+route.
 
-   The default entrypoint is ``/bin/sh``; we'll explain this workflow for now.
+The default entrypoint is ``/bin/sh``; we'll explain this workflow for now.
 
-   The spawned entrypoint is run with the following variables added to its
-   environment:
+The spawned entrypoint is run with the following variables added to its
+environment:
 
-   - ``KAPOW_HANDLER_ID``: Containing the `HANDLER_ID`
-   - ``KAPOW_DATAAPI_URL``: With the URL of the `Data HTTP Interface`
-   - ``KAPOW_CONTROLAPI_URL``: With the URL of the `Control HTTP Interface`
+- ``KAPOW_HANDLER_ID``: Containing the `HANDLER_ID`
+- ``KAPOW_DATAAPI_URL``: With the URL of the `Data HTTP Interface`
+- ``KAPOW_CONTROLAPI_URL``: With the URL of the `Control HTTP Interface`
 
 3. ``kapow set /response/body banana``
+--------------------------------------
 
-   During the lifetime of the shell, the request and response resources are
-   available via these commands:
+During the lifetime of the shell, the request and response resources are
+available via these commands:
 
-   - ``kapow get /request/...``
+- ``kapow get /request/...``
 
-   - ``kapow set /response/...``
+- ``kapow set /response/...``
 
-   - These commands use the aforementioned environment variables to read data from
-   the user request and to write the response.
-
-   - They accept data either as arguments or from stdin.
+These commands use the aforementioned environment variables to read data
+from the user request and to write the response.  They accept data
+either as arguments or from ``stdin``.
 
 4. exit
+-------
 
-   The shell dies.
+The shell dies.
 
 5. response
+-----------
 
- ``kapow`` finalizes the original request.
+``kapow`` finalizes the original request.
 
 
 .. todo::