L2SS-434: Add cross reference to rest API

docs/source/control.rst

@@ -61,6 +61,8 @@ To obtain a list of all devices, we need to access the database::
   # Print the device's state.
   print(any_device.state())
 
+.. _rest-api:
+
 ReST API
 ------------------------
 

docs/source/remote_interfaces.rst

@@ -22,7 +22,7 @@ Futhermore, there are some low-level interfaces:
 +---------------------+--------------+----------------------+-------------------+
 |Timeseries Database  |Prometheus    |http://localhost:9090 |                   |
 +---------------------+--------------+----------------------+-------------------+
-|ReST API             |tango-rest    |http://localhost:8080 |tango-cs/tango     |
+| :ref:`rest-api`     |tango-rest    |http://localhost:8080 |tango-cs/tango     |
 +---------------------+--------------+----------------------+-------------------+
 |Tango Database       |MariaDB       |http://localhost:3306 |tango/tango        |
 +---------------------+--------------+----------------------+-------------------+