Update query-history.mdx

The "Top Queries" definition was incorrect as learned in a Q&A with Artyom and Pavel. I also added the information about the 100 query limit.

docs/pages/product/workspace/query-history.mdx

@@ -58,7 +58,7 @@ switching between the <Btn>API</Btn> and <Btn>Database</Btn> tabs.
 ### All queries and top queries
 
 Clicking <Btn>All Queries</Btn> will show all queries in order of recency,
-while <Btn>Top Queries</Btn> will show the most-frequently executed queries:
+while <Btn>Top Queries</Btn> will show the queries with the largest total duration (hits * avg duration) in the selected time frame. Both results are limited to 100 unique queries. 
 
 <Screenshot
   highlight="inset(30% 65% 64% 7% round 10px)"
@@ -207,4 +207,4 @@ while the query is in the query execution queue:
 [ref-deployment-refresh-worker]: /product/deployment#refresh-worker
 [ref-workspace-sqlrunner]: /product/workspace/sql-runner
 [ref-query-format]: /product/apis-integrations/rest-api/query-format
-[ref-cache-types]: /product/caching#cache-type
+[ref-cache-types]: /product/caching#cache-type