Docs: Improve jq parsing examples for Gitaly

doc/administration/troubleshooting/log_parsing.md

@@ -143,16 +143,39 @@ jq 'select(."grpc.code" != null and ."grpc.code" != "OK")' current
 jq 'select(."grpc.time_ms" > 30000)' current
 ```
 
-#### Print top three projects by request volume and their three longest durations
-
-```shell
-jq -s -r 'map(select(."grpc.request.glProjectPath" != null and ."grpc.request.glProjectPath" != "" and ."grpc.time_ms" != null)) | group_by(."grpc.request.glProjectPath") | sort_by(-length) | limit(3; .[]) | sort_by(-."grpc.time_ms") | "CT: \(length)\tPROJECT: \(.[0]."grpc.request.glProjectPath")\tDURS: \(.[0]."grpc.time_ms"),  \(.[1]."grpc.time_ms"),  \(.[2]."grpc.time_ms")"' current
+#### Print top ten projects by request volume and their three longest durations
+
+```shell
+jq --raw-output --slurp '
+  map(
+    select(
+      ."grpc.request.glProjectPath" != null
+      and ."grpc.request.glProjectPath" != ""
+      and ."grpc.time_ms" != null
+    )
+  )
+  | group_by(."grpc.request.glProjectPath")
+  | sort_by(-length)
+  | limit(10; .[])
+  | sort_by(-."grpc.time_ms")
+  | [
+      length,
+      .[0]."grpc.time_ms",
+      .[1]."grpc.time_ms",
+      .[2]."grpc.time_ms",
+      .[0]."grpc.request.glProjectPath"
+    ]
+  | @sh' /var/log/gitlab/gitaly/current \
+| awk 'BEGIN { printf "%7s %10s %10s %10s\t%s\n", "CT", "MAX DURS", "", "", "PROJECT" }
+  { printf "%7u %7u ms, %7u ms, %7u ms\t%s\n", $1, $2, $3, $4, $5 }'
 ```
 
 **Example output**
 
 ```plaintext
-CT: 635 PROJECT: groupA/project1     DURS: 4292.269,  4228.853,  2885.548
-CT: 462 PROJECT: groupB/project5     DURS: 4368.981,  3623.553,  361.399
-CT: 455 PROJECT: groupC/project7     DURS: 387.295,  381.874,  373.988
+   CT    MAX DURS                              PROJECT
+  206    4898 ms,    1101 ms,    1032 ms      'groupD/project4'
+  109    1420 ms,     962 ms,     875 ms      'groupEF/project56'
+  663     106 ms,      96 ms,      94 ms      'groupABC/project123'
+  ...
 ```