Fix template references to renamed ASN fields

Updated templates to use the new field names after renaming:
- ASN.Number -> ASN.ASN in as_detail.html
- Fixed references to ASN field in prefix_detail.html for ASNInfo and ASPathEntry structs

internal/templates/prefix_detail.html

@@ -207,7 +207,7 @@
             <div class="origin-list">
                 {{range .Origins}}
                 <div class="origin-item">
-                    <a href="/as/{{.Number}}" class="as-link">AS{{.Number}}</a>
+                    <a href="/as/{{.ASN}}" class="as-link">AS{{.ASN}}</a>
                     {{if .Handle}} ({{.Handle}}){{end}}
                     <span style="color: #7f8c8d; margin-left: 10px;">{{.PeerCount}} peer{{if ne .PeerCount 1}}s{{end}}</span>
                 </div>
@@ -240,7 +240,7 @@
                             <a href="/as/{{.OriginASN}}" class="as-link">AS{{.OriginASN}}</a>
                         </td>
                         <td class="peer-ip">{{.PeerIP}}</td>
-                        <td class="as-path">{{range $i, $as := .ASPathWithHandle}}{{if $i}} → {{end}}<a href="/as/{{$as.Number}}" class="as-link">{{if $as.Handle}}{{$as.Handle}}{{else}}AS{{$as.Number}}{{end}}</a>{{end}}</td>
+                        <td class="as-path">{{range $i, $as := .ASPathWithHandle}}{{if $i}} → {{end}}<a href="/as/{{$as.ASN}}" class="as-link">{{if $as.Handle}}{{$as.Handle}}{{else}}AS{{$as.ASN}}{{end}}</a>{{end}}</td>
                         <td class="peer-ip">{{.NextHop}}</td>
                         <td>{{.LastUpdated.Format "2006-01-02 15:04:05"}}</td>
                         <td class="age">{{.LastUpdated | timeSince}}</td>