Elasticsearch json logging

docs/reference/migration/migrate_7_0/logging.asciidoc

@@ -17,19 +17,17 @@ Following files should be expected now in log directory:
 * ${cluster_name}_index_indexing_slowlog.log
 * ${cluster_name}_audit.json
 * gc.log
-* http.ports
-* transport.ports
 
-Note: You can override additional files by removing the unwanted appenders in `log4j2.properties`.
+Note: You can configure which of these files are written by editing `log4j2.properties`.
 
 [float]
 ==== Log files ending with `*.log` deprecated
-
-Log files with `*.log` using old pattern layout format are now considered deprecated
-and newly added JSON logs ending `*.json` should be used.
-Note: GC logs in a file `gc.log` are not going to be changed.
+Log files with the `.log` file extension using the old pattern layout format
+are now considered deprecated and the newly added JSON log file format with
+the .json file extension should be used instead.
+Note: GC logs which are written to the file gc.log will not be changed.
 
 [float]
 ==== Docker output in JSON format
 
-All docker console logs are now in JSON format. You can distinguish logs streams with a `type` field.
+All Docker console logs are now in JSON format. You can distinguish logs streams with the `type` field.