update doc page

docs/20_Checks/check_couchdb.md

@@ -116,6 +116,30 @@ ______________________Property____Counter______Delta
  |abortedrequests=0;; bulkrequests=0;; requests=1;; viewtimeouts=0;; findtimeouts=0;; explaintimeouts=0;; alldocstimeouts=0;; partitionviewrequests=0;; partitionfindrequests=0;; partitionexplainrequests=0;; partitionalldocsrequests=0;; partitionviewtimeouts=0;; partitionfindtimeouts=0;; partitionexplaintimeouts=0;; partitionalldocstimeouts=0;; temporaryviewreads=0;; viewreads=0;; clientsrequestingchanges=0;; purgerequests=0;;
 ```
 
+Description of the properties:
+
+| Property                   | Description
+|---                         | ---
+| aborted_requests           | number of aborted requests
+| bulk_requests              | number of bulk requests
+| requests                   | number of HTTP requests
+| view_timeouts              | number of HTTP view timeouts
+| find_timeouts              | number of HTTP find timeouts
+| explain_timeouts           | number of HTTP _explain timeouts
+| all_docs_timeouts          | number of HTTP all_docs timeouts
+| partition_view_requests    | number of partition HTTP view requests
+| partition_find_requests    | number of partition HTTP _find requests
+| partition_explain_requests | number of partition HTTP _explain requests
+| partition_all_docs_requests| number of partition HTTP _all_docs requests
+| partition_view_timeouts    | number of partition HTTP view timeouts
+| partition_find_timeouts    | number of partition HTTP find timeouts
+| partition_explain_timeouts | number of partition HTTP _explain timeouts
+| partition_all_docs_timeouts|number of partition HTTP all_docs timeouts
+| temporary_view_reads       | number of temporary view reads
+view_reads                   | number of view reads
+| clients_requesting_changes | number of clients for continuous _changes
+| purge_requests             |number of purge requests
+
 ### httpd_methods
 
 Show counters for http request methods.