Add link to PDR notes.

applications/lofar2/doc/prestudy/station2_sdp_transient_buffer.txt

@@ -5,6 +5,7 @@ References:
 [2] https://support.astron.nl/confluence/display/L2M/2022-10-24+LIFT+meeting+notes
 [3] L1 LOFAR2 Decision: Transport of buffer data from Station to CEP, https://support.astron.nl/confluence/pages/viewpage.action?pageId=94766339
 [4] LOFAR1 TBB: https://support.astron.nl/confluence/display/L2M/Temporary+storage+of+documents+and+papers
+[5] LOFAR2 PDR: https://support.astron.nl/confluence/pages/viewpage.action?spaceKey=L2M&title=2019-07-01+Meeting+notes%3A+Transient+Buffer+functionality
 
 0) MVP = minimal viable product:
   - omvat TB, maar nog niet Transient Detectie (TDet)