docs: link external docs for target format

docs/configuration.md

@@ -648,24 +648,25 @@ in Excel or OpenOffice Calc) or MySQL/MariaDB database.
 
 You can select one of following query log types:
 
-- `mysql` - log each query in the external MySQL/MariaDB database
-- `postgresql` - log each query in the external PostgreSQL database
-- `timescale` - log each query in the external Timescale database
-- `csv` - log into CSV file (one per day)
-- `csv-client` - log into CSV file (one per day and per client)
-- `console` - log into console output
-- `none` - do not log any queries
+- `mysql`: log each query in the external MySQL/MariaDB database  
+  `target` format docs: [Data Source Name](https://github.com/go-sql-driver/mysql?tab=readme-ov-file#dsn-data-source-name).
+- `postgresql`: log each query in the external PostgreSQL database
+- `timescale`: log each query in the external Timescale database
+- `csv`: log into CSV file (one per day)
+- `csv-client`: log into CSV file (one per day and per client)
+- `console`: log into console output
+- `none`: do not log any queries
 
 ### Query log fields
 
 You can choose which information from processed DNS request and response should be logged in the target system. You can define one or more of following fields:
 
-- `clientIP` - origin IP address from the request
-- `clientName` - resolved client name(s) from the origins request
-- `responseReason` - reason for the response (e.g. from which upstream resolver), response type and code
-- `responseAnswer` - returned DNS answer
-- `question` - DNS question from the request
-- `duration` - request processing time in milliseconds
+- `clientIP`: origin IP address from the request
+- `clientName`: resolved client name(s) from the origins request
+- `responseReason`: reason for the response (e.g. from which upstream resolver), response type and code
+- `responseAnswer`: returned DNS answer
+- `question`: DNS question from the request
+- `duration`: request processing time in milliseconds
 
 !!! hint
     If not defined, blocky will log all available information