Update data-optimize-techniques.mdx

adding tip

src/content/docs/tutorial-optimize-telemetry/data-optimize-techniques.mdx

@@ -1368,6 +1368,9 @@ mutation {
       }
   }
   ```
+<Callout variant="tip">
+Since `trace.id`s are hexadecimal numbers, every character of the `trace.id` is a value of `0123456789abcdef`. Each character that you add to the `RLIKE` pattern will match an additional 1/16 of the rows in the span event, assuming the final characters have even distribution. If you add letters beyond F that aren't used in hexadecimal, the added digits won't affect the percentage matched.
+</Callout>
   </Collapser>
 
   <Collapser