Update tempo docs

[josunect]

Fixes kiali/kiali#6952

https://deploy-preview-735--kiali.netlify.app/docs/configuration/p8s-jaeger-grafana/tracing/tempo/

[jmazzitelli]

@josunect In addition to my suggestions below, there is one other thing I would like to change but it isn't touched in this PR so github won't let me comment on it directly. It is line 114 that says this:

The `in_cluster_url` Kiali option needs to be set to'
`http://query-frontend.tempo.svc.cluster.local:16685`.

It isn't clear to the reader what this in_cluster_url setting is (and even I'm not 100% sure - I think this is the tracing in_cluster_url, right???). Can we change this to be more specific; something like this (also notice there was an extra ' character here at the end of the line that should be deleted and replaced with the : (colon) character):

The `external_services.tracing.in_cluster_url` Kiali option needs to be set to:
`http://query-frontend.tempo.svc.cluster.local:16685`.

[josunect]

@josunect In addition to my suggestions below, there is one other thing I would like to change but it isn't touched in this PR so github won't let me comment on it directly. It is line 114 that says this:

The `in_cluster_url` Kiali option needs to be set to'
`http://query-frontend.tempo.svc.cluster.local:16685`.

It isn't clear to the reader what this in_cluster_url setting is (and even I'm not 100% sure - I think this is the tracing in_cluster_url, right???). Can we change this to be more specific; something like this (also notice there was an extra ' character here at the end of the line that should be deleted and replaced with the : (colon) character):

The `external_services.tracing.in_cluster_url` Kiali option needs to be set to:
`http://query-frontend.tempo.svc.cluster.local:16685`.

Yes, right, that is the tracing section.

[jmazzitelli]

LGTM