Replace omarroth with iv-org where applicable (#1353)

Fixes #1353

src/invidious.cr

@@ -5855,7 +5855,7 @@ end
 error 500 do |env|
   error_message = <<-END_HTML
   Looks like you've found a bug in Invidious. Feel free to open a new issue
-  <a href="https://github.com/omarroth/invidious/issues">here</a>
+  <a href="https://github.com/iv-org/invidious/issues">here</a>
   or send an email to
   <a href="mailto:#{CONFIG.admin_email}">#{CONFIG.admin_email}</a>.
   END_HTML

src/invidious/views/template.ecr

@@ -111,7 +111,7 @@
             <div class="footer">
                 <div class="pure-g">
                     <div class="pure-u-1 pure-u-md-1-3">
-                        <a href="https://github.com/omarroth/invidious">
+                        <a href="https://github.com/iv-org/invidious">
                             <%= translate(locale, "Released under the AGPLv3 by Omar Roth.") %>
                         </a>
                     </div>