doc: update prometheus docs, add holmes CLI config

Author: nherment

docs/configuration/holmesgpt/toolsets/prometheus.rst

@@ -6,34 +6,40 @@ validate prometheus queries.
 
 There is also an option for Holmes to analyze prometheus metrics. When enabled, HolmesGPT can detect memory leak patterns,
 CPU throttling, high latency for your APIs, etc. The configuration field to enable prometheus metrics analysis is
-`tool_calls_return_data`.
+``tool_calls_return_data``.
 
 Configuration
 -------------
 
+.. md-tab-set::
 
-.. code-block:: yaml
+  .. md-tab-item:: Robusta Helm Chat
 
-    holmes:
-        toolsets:
-            prometheus/metrics:
-                enabled: true
-            config:
-                prometheus_url: http://robusta-kube-prometheus-st-prometheus.default.svc.cluster.local:9090
+    .. code-block:: yaml
 
+        holmes:
+            toolsets:
+                prometheus/metrics:
+                    enabled: true
+                config:
+                    prometheus_url: ...
+                    metrics_labels_time_window_hrs: 48 # default value
+                    metrics_labels_cache_duration_hrs: 12 # default value
+                    fetch_labels_with_labels_api: false # default value
+                    fetch_metadata_with_series_api: false # default value
+                    tool_calls_return_data: false # default value
+                    headers:
+                        Authorization: "Basic <base_64_encoded_string>"
 
-It is also possible to set the ``PROMETHEUS_URL`` environment variable instead of the above ``prometheus_url`` config key.
 
-.. include:: ./_toolset_configuration.inc.rst
+    .. include:: ./_toolset_configuration.inc.rst
 
-Prior to generating a PromQL query, HolmesQPT tends to list the available metrics. This is done to ensure the metrics used
-in PromQL are actually available.
+  .. md-tab-item:: Holmes CLI
 
-Below is the full list of options for this toolset:
+    Add the following to **~/.holmes/config.yaml**, creating the file if it doesn't exist:
 
-.. code-block:: yaml
+    .. code-block:: yaml
 
-    holmes:
         toolsets:
             prometheus/metrics:
                 enabled: true
@@ -47,6 +53,12 @@ Below is the full list of options for this toolset:
                 headers:
                     Authorization: "Basic <base_64_encoded_string>"
 
+It is also possible to set the ``PROMETHEUS_URL`` environment variable instead of the above ``prometheus_url`` config key.
+
+Prior to generating a PromQL query, HolmesQPT tends to list the available metrics. This is done to ensure the metrics used
+in PromQL are actually available.
+
+Below is the full list of options for this toolset:
 
 - **metrics_labels_time_window_hrs** Represents the time window, in hours, over which labels are fetched. This avoids fetching obsolete labels. Set it to ``null`` to let HolmesGPT fetch labels regardless of when they were generated.
 - **metrics_labels_cache_duration_hrs** How long are labels cached, in hours. Set it to ``null`` to disable caching.