Fix wrong links in ceilometer

Some docs links have changed.
We should update the wrong links in our codes.

Change-Id: I134b51bfe6de3374920cbb62f0c93218aba6d965

doc/source/contributor/configuration.rst

@@ -167,7 +167,7 @@ same as the names of the related extensions in :file:`setup.cfg`. For a more
 detailed description, please see the `transformers`_ section of the
 Administrator Guide of Ceilometer.
 
-.. _transformers: https://docs.openstack.org/admin-guide/telemetry-data-collection.html#transformers
+.. _transformers: https://docs.openstack.org/ceilometer/latest/admin/telemetry-data-pipelines.html#transformers
 
 The *publishers* section contains the list of publishers, where the samples
 data should be sent after the possible transformations. The names of the
@@ -212,4 +212,4 @@ Publishers
 For more information about publishers see the `publishers`_ section of the
 Administrator Guide of Ceilometer.
 
-.. _publishers: https://docs.openstack.org/admin-guide/telemetry-data-pipelines.html#publishers
+.. _publishers: https://docs.openstack.org/ceilometer/latest/admin/telemetry-data-pipelines.html#publishers

doc/source/contributor/measurements.rst

@@ -25,7 +25,7 @@ Existing meters
 For the list of existing meters see the tables under the
 `Measurements page`_ of Ceilometer in the Administrator Guide.
 
-.. _Measurements page: https://docs.openstack.org/admin-guide/telemetry-measurements.html
+.. _Measurements page: https://docs.openstack.org/ceilometer/latest/admin/telemetry-measurements.html
 
 Adding new meters
 =================

doc/source/contributor/new_meters.rst

@@ -99,7 +99,7 @@ specific topics.
 A detailed description of how to use meter definition is illustrated in
 the `admin_guide`_.
 
-.. _admin_guide: https://docs.openstack.org/admin-guide/telemetry-data-collection.html#meter-definitions
+.. _admin_guide: https://docs.openstack.org/ceilometer/latest/admin/telemetry-data-collection.html#meter-definitions
 
 Non-metric meters and events
 ----------------------------