Fix 2 incorrect MD frontmatter entries (#2174)

* Fix host names missing when name is null, fall back to username

* Fix 2 incorrect MD frontmatter entries: linkedin key in show 610, url array in show 616

Author: 2u841r

shows/610 - Supper.md

@@ -6,7 +6,6 @@ url: https://traffic.megaphone.fm/FSI7028552678.mp3
 guest:
   name: Zach Lloyd
   twitter: zachlloydtweets
-  linkedin: zachlloyd
   github: zachlloyd
   url: https://www.warp.dev/
 ---

shows/616 - adam CSS.md

@@ -7,11 +7,8 @@ guest:
   name: Adam Argyle
   github: argyleink
   twitter: argyleink
-  url: 
-  - https://nerdy.dev/
-  - https://gradient.style/
-  social: 
-  - https://bsky.app/profile/nerdy.dev
+  url: https://nerdy.dev/
+  social: https://bsky.app/profile/nerdy.dev
 ---
 
 In this supper club episode of Syntax, Wes and Scott talk with Adam Argyle about a ton of new CSS features that have arrived or are coming soon, as well as his new site Gradient.style.

src/lib/HostsAndGuests.svelte

@@ -31,7 +31,7 @@
 		{#each hosts as host}
 			<Host
 				host={{
-					name: host.name || '',
+					name: host.name || host.username || '',
 					github: host.username,
 					twitter: host.twitter
 				}}