fix: open new window on arxiv button

Author: tkkim-robot

layouts/partials/paper-card.html

@@ -60,7 +60,7 @@
             <a href="{{ .Params.link }}" target="_blank">link</a> /
           {{ end }}
           {{ if .Params.arxiv }}
-            <a href="{{ .Params.arxiv}}">arxiv</a> /
+            <a href="{{ .Params.arxiv}}" target="_blank">arxiv</a> /
           {{ end }}
 
           {{ if .Params.bib }}

layouts/partials/small-paper-list-item.html

@@ -51,7 +51,7 @@
             <a href="{{ .Params.link }}" target="_blank">link</a> /
           {{ end }}
           {{ if .Params.arxiv }}
-            <a href="{{ .Params.arxiv}}">arxiv</a> /
+            <a href="{{ .Params.arxiv }}" target="_blank">arxiv</a> /
           {{ end }}
           {{ if .Params.bib }}
             <a data-bs-toggle="collapse" href="#collapse-bib-{{ .Key }}" role="button">bib</a> /