doc: markup {User,Control,Data} HTTP Interface as role any

Also markup localhost:8080 as code, for consistency.

Co-authored-by: Roberto Abdelkader Martínez Pérez <robertomartinezp@gmail.com>

docs/source/concepts/interfaces.rst

@@ -8,7 +8,7 @@ clear purpose.
 User Interface
 --------------
 
-The User HTTP interface is used to serve final user requests.
+The :any:`User HTTP Interface` is used to serve final user requests.
 
 By default it binds to address ``0.0.0.0`` and port ``8080``, but that can be
 changed via the ``--bind`` flag.
@@ -17,7 +17,7 @@ changed via the ``--bind`` flag.
 Control Interface
 -----------------
 
-The Control HTTP interface is used by the command `kapow route` to
+The :any:`Control HTTP Interface` is used by the command ``kapow route`` to
 administer the list of system routes.
 
 By default it binds to address ``127.0.0.1`` and port ``8081``, but that can be
@@ -27,7 +27,7 @@ changed via the ``--control-bind`` flag.
 Data Interface
 --------------
 
-The Data HTTP interface is used by the commands ``kapow get`` and ``kapow
+The :any:`Data HTTP Interface` is used by the commands ``kapow get`` and ``kapow
 set`` to exchange the data for a particular request.
 
 By default it binds to address ``127.0.0.1`` and port ``8082``, but that can be

docs/source/concepts/request_life_cycle.rst

@@ -2,7 +2,7 @@ Request Life Cycle
 ==================
 
 This section describes the sequence of events happening for each request
-answered by the `User HTTP Interface`.
+answered by the :any:`User HTTP Interface`.
 
 .. image:: ../_static/request_life_cycle.png
 
@@ -10,7 +10,7 @@ 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 :any:`User HTTP Interface`.
 
 - The request is matched against the route table.
 
@@ -30,8 +30,8 @@ The spawned entrypoint is run with the following variables added to its
 environment:
 
 - :envvar:`KAPOW_HANDLER_ID`: Containing the `HANDLER_ID`
-- :envvar:`KAPOW_DATAAPI_URL`: With the URL of the `Data HTTP Interface`
-- :envvar:`KAPOW_CONTROLAPI_URL`: With the URL of the `Control HTTP Interface`
+- :envvar:`KAPOW_DATAAPI_URL`: With the URL of the :any:`Data HTTP Interface`
+- :envvar:`KAPOW_CONTROLAPI_URL`: With the URL of the :any:`Control HTTP Interface`
 
 
 3. ``kapow set /response/body banana``

docs/source/concepts/routes.rst

@@ -2,7 +2,7 @@ Routes
 ======
 
 A *Kapow!* route specifies the matching criteria for an incoming request on
-the `User HTTP Interface`, and the details to handle it.
+the :any:`User HTTP Interface`, and the details to handle it.
 
 *Kapow!* implements a *route table* where all routes reside.
 

docs/source/examples/index.rst

@@ -142,7 +142,8 @@ Or, if you want human-readable output, you can use :program:`jq`:
 
 .. note::
 
-    *Kapow!* has an `HTTP` admin interface, by default listening at **localhost:8081**
+   *Kapow!* has a :any:`Control HTTP Interface`, bound by default to
+   ``localhost:8081``
 
 
 Deleting Routes