change(ess): Make v1.17 info a note

Documentation/bluetooth/ess.rst

@@ -3,9 +3,6 @@
 Environmental Sensing Service
 ========================
 
-.. warning::
-    This service will be available in version v1.17
-
 The Environmental Sensing Service (ESS) implements access to
 the BME680 environmental sensor of the card10.
 
@@ -31,6 +28,9 @@ A measurement can also be triggered by reading from a characteristic. A measurem
 .. note::
    If :ref:`bsec_api` is enabled, reading a characteristic will not trigger a new measurement.
 
+.. note::
+    This service will be available in version v1.17.
+
 
 BLE Service
 -----------