fixed docs

Author: SDxKeeper

README.md

@@ -52,7 +52,8 @@ Metrics
 |-------------------------------------------------|---------------|--------------------------------------------------------------------------------------|
 | `azure_devops_stats`                            | live          | General scraper stats                                                                |
 | `azure_devops_agentpool_info`                   | live          | Agent Pool informations                                                              |
-| `azure_devops_agentpool_size`                   | live          | Queue size per agent pool                                                            |
+| `azure_devops_agentpool_size`                   | live          | Number of agents per agent pool                                                      |
+| `azure_devops_agentpool_queue_length`           | live          | Queue length per agent pool                                                          |
 | `azure_devops_agentpool_agent_info`             | live          | Agent information per agent pool                                                     |
 | `azure_devops_agentpool_agent_status`           | live          | Status informations (eg. created date) for each agent in a agent pool                |
 | `azure_devops_agentpool_agent_job`              | live          | Currently running jobs on each agent                                                 |
@@ -155,7 +156,7 @@ Agent pool usage (without PoolMaintenance)
 count by(agentPoolID) (
   azure_devops_agentpool_agent_job{planType!="PoolMaintenance"}
   * on(agentPoolAgentID) group_left(agentPoolID) (azure_devops_agentpool_agent_info)
-) 
+)
 / on (agentPoolID) group_left() (azure_devops_agentpool_size)
 * on (agentPoolID) group_left(agentPoolName) (azure_devops_agentpool_info)
 ```