feat(splunk siem): Update doc (#783)

Author: julienloizelet

crowdsec-docs/static/img/splunk_siem/splunk_siem_example.png

@@ -23,3 +23,88 @@ The Splunk SIEM App is available in Splunkbase. You can download it from [here](
 - Test it by running the query `| makeresults | eval ip="8.8.8.8" | cssmoke ipfield="ip"`
 
 ![Example Output](/img/splunk_siem/splunk_siem_example.png)
+
+![Example Output (2)](/img/splunk_siem/splunk_siem_example_2.png)
+
+## Enriched Data
+
+The following fields are automatically enriched using **CrowdSec** intelligence:
+
+(Please refer to the [CrowdSec CTI API documentation](https://docs.crowdsec.net/u/cti_api/taxonomy/cti_object/) for more details on each field.)
+
+
+### Reputation & Classification
+
+* `crowdsec_reputation`: IP reputation
+* `crowdsec_confidence`: Confidence level
+* `crowdsec_ip_range_score`: The malevolence score of the IP range the IP belongs to
+* `crowdsec_ip`: Original IP address
+* `crowdsec_ip_range`: IP range
+* `crowdsec_ip_range_24`: /24 range of the IP address
+* `crowdsec_ip_range_24_reputation`: Reputation of the range
+* `crowdsec_ip_range_24_score`: Score for the range
+* `crowdsec_as_name`: Autonomous system (AS) name
+* `crowdsec_as_num`: Autonomous system (AS) number
+* `crowdsec_false_positives`: Historical false positives
+* `crowdsec_classifications`: Classifications associated with the IP
+
+### Geolocation
+
+* `crowdsec_country`: Country
+* `crowdsec_city`: City
+* `crowdsec_latitude`: Latitude
+* `crowdsec_longitude`: Longitude
+* `crowdsec_reverse_dns`: Reverse DNS result
+
+### Behavioral & Threat Intelligence
+
+* `crowdsec_behaviors`: A list of the attack categories for which the IP was reported
+* `crowdsec_mitre_techniques`: A list of Mitre techniques associated with the IP
+* `crowdsec_cves`: A list of CVEs for which the IP has been reported for
+* `crowdsec_attack_details`: A more exhaustive list of the scenarios for which a given IP was reported
+* `crowdsec_target_countries`: The top 10 countries targeted by the IP
+* `crowdsec_background_noise`: The level of background noise of an IP address is an indicator of its internet activity intensity
+* `crowdsec_background_noise_score`: CrowdSec intelligence calculated score
+* `crowdsec_references`: A list of the CrowdSec Blockists the IP belongs to
+
+### Activity History
+
+* `crowdsec_first_seen`: Date of the first time this IP was reported
+* `crowdsec_last_seen`: Date of the last time this IP was reported
+* `crowdsec_full_age`: Delta in days between first seen and today
+* `crowdsec_days_age`: Delta in days between first and last seen timestamps
+
+### Threat Scores Over Time
+
+#### Overall
+
+* `crowdsec_overall_aggressiveness`
+* `crowdsec_overall_threat`
+* `crowdsec_overall_trust`
+* `crowdsec_overall_anomaly`
+* `crowdsec_overall_total`
+
+#### Last Day
+
+* `crowdsec_last_day_aggressiveness`
+* `crowdsec_last_day_threat`
+* `crowdsec_last_day_trust`
+* `crowdsec_last_day_anomaly`
+* `crowdsec_last_day_total`
+
+#### Last Week
+
+* `crowdsec_last_week_aggressiveness`
+* `crowdsec_last_week_threat`
+* `crowdsec_last_week_trust`
+* `crowdsec_last_week_anomaly`
+* `crowdsec_last_week_total`
+
+#### Last Month
+
+* `crowdsec_last_month_aggressiveness`
+* `crowdsec_last_month_threat`
+* `crowdsec_last_month_trust`
+* `crowdsec_last_month_anomaly`
+* `crowdsec_last_month_total`
+