Add PR ids in the changelog. I keep forgetting to do that.

CHANGELOG.md

@@ -18,10 +18,10 @@ All notable changes to this project will be documented in this file based on the
 * Remove top level objects `kubernetes` and `tls`. #132
 * Remove `*.timezone.offset.sec` fields as too specific for ECS at the moment. #134
 * Make the following fields keyword: device.vendor, file.path, file.target_path, http.response.body, network.name, organization.name, url.href, url.path, url.query, user_agent.original
-* Rename `url.host.name` to `url.hostname` to better align with industry convention.
+* Rename `url.host.name` to `url.hostname` to better align with industry convention. #147
 * Make the following fields keyword: device.vendor, file.path, file.target_path, http.response.body, network.name, organization.name, url.href, url.path, url.query, user_agent.original. #137
   * Only two fields using `text` indexing at this time are `message` and `error.message`.
-* Rename `host.name` to `host.hostname` to better align with industry convention.
+* Rename `host.name` to `host.hostname` to better align with industry convention. #144
 
 ### Bugfixes