fix poster link

Author: Issa Hanou

_bibliography/papers.bib

@@ -12,7 +12,7 @@ @InProceedings{Hanou2023moving
   html             = {https://ojs.aaai.org/index.php/ICAPS/article/view/27228},
   selected         = {true},
   supp             = {icaps23_sup.pdf},
-  poster           = {poster_icaps23},
+  poster           = {poster_icaps23.pdf},
 }
 @Inproceedings{Hanou2024replanning,
   author           = {Issa Hanou* and Devin Wild Thomas* and Wheeler Ruml and Mathijs De Weerdt},
@@ -41,7 +41,7 @@ @InCollection{Hanou2024aIncreasing
   pdf              = {tra24.pdf},
   selected         = {false},
   tobepublished    = {true},
-  poster           = {poster_tra24},
+  poster           = {poster_tra24.pdf},
 }
 @mastersthesis{Hanou2022Applying,
   author           = {Issa Hanou},