Update default query history format

Author: shati-patel

docs/codeql/codeql-for-visual-studio-code/customizing-settings.rst

@@ -37,12 +37,13 @@ Changing the labels of query history items
 
 The query history **Format** setting controls how the extension lists queries in the query history. By default, each item has a label with the following format::
     
-    [%t] %q on %d - %s
-  
-- ``%t`` is the time the query was run
+    %q on %d - %s, %r result count [%t]
+
 - ``%q`` is the query name
 - ``%d`` is the database name
 - ``%s`` is a status string
+- ``%r`` is the number of results
+- ``%t`` is the time the query was run
 
 To override the default label, you can specify a different format for the query history items.